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CVE-2026-59936 (GCVE-0-2026-59936)

Vulnerability from nvd – Published: 2026-07-08 19:34 – Updated: 2026-07-09 13:28

Title

pypdf: Possible infinite loop for not terminated inline images

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.1, an attacker can craft a PDF with a page content stream containing a not terminated inline image, causing an infinite loop during inline image end marker detection such as when extracting page text. This issue is fixed in version 6.14.1.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M

References

4 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3891	x_refsource_MISC
https://github.com/py-pdf/pypdf/commit/ec3b145961…	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.14.1	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.14.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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        "metrics": [
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                "id": "CVE-2026-59936",
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                    "Technical Impact": "partial"
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        "title": "CISA ADP Vulnrichment"
      }
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          "lang": "en",
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
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            "baseSeverity": "HIGH",
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          ],
          "url": "https://github.com/py-pdf/pypdf/security/advisories/GHSA-5xf7-4p34-54qr"
        },
        {
          "name": "https://github.com/py-pdf/pypdf/pull/3891",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/py-pdf/pypdf/pull/3891"
        },
        {
          "name": "https://github.com/py-pdf/pypdf/commit/ec3b14596186c40caca7cf8ab9b2155203e01b5b",
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        },
        {
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      "source": {
        "advisory": "GHSA-5xf7-4p34-54qr",
        "discovery": "UNKNOWN"
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      "title": "pypdf: Possible infinite loop for not terminated inline images"
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  "cveMetadata": {
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-59936",
    "datePublished": "2026-07-08T19:34:22.610Z",
    "dateReserved": "2026-07-07T18:20:06.127Z",
    "dateUpdated": "2026-07-09T13:28:21.161Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-59935 (GCVE-0-2026-59935)

Vulnerability from nvd – Published: 2026-07-08 19:34 – Updated: 2026-07-09 13:36

Title

pypdf: Possible infinite loop for not terminated inline images (ASCII85 and ASCIIHex filter)

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.2, an attacker can craft a PDF with a page content stream containing a not terminated inline image that uses the ASCII85 or ASCIIHex filters, causing an infinite loop during parsing such as when extracting page text. This issue is fixed in version 6.14.2.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

GitHub_M

References

4 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3892	x_refsource_MISC
https://github.com/py-pdf/pypdf/commit/5a33a46416…	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.14.2	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.14.2

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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        "metrics": [
          {
            "other": {
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                "id": "CVE-2026-59935",
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                  },
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                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
                "timestamp": "2026-07-09T13:36:07.945731Z",
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
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        {
          "product": "pypdf",
          "vendor": "py-pdf",
          "versions": [
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
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            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
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          }
        }
      ],
      "problemTypes": [
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          "descriptions": [
            {
              "cweId": "CWE-835",
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          ]
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      ],
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          ],
          "url": "https://github.com/py-pdf/pypdf/security/advisories/GHSA-g867-7843-wf8q"
        },
        {
          "name": "https://github.com/py-pdf/pypdf/pull/3892",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/py-pdf/pypdf/pull/3892"
        },
        {
          "name": "https://github.com/py-pdf/pypdf/commit/5a33a46416aa1ae6c025ff90a3cca57631fdafd2",
          "tags": [
            "x_refsource_MISC"
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          "url": "https://github.com/py-pdf/pypdf/commit/5a33a46416aa1ae6c025ff90a3cca57631fdafd2"
        },
        {
          "name": "https://github.com/py-pdf/pypdf/releases/tag/6.14.2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/py-pdf/pypdf/releases/tag/6.14.2"
        }
      ],
      "source": {
        "advisory": "GHSA-g867-7843-wf8q",
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      "title": "pypdf: Possible infinite loop for not terminated inline images (ASCII85 and ASCIIHex filter)"
    }
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    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-59935",
    "datePublished": "2026-07-08T19:34:15.078Z",
    "dateReserved": "2026-07-07T18:20:06.126Z",
    "dateUpdated": "2026-07-09T13:36:17.854Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-59938 (GCVE-0-2026-59938)

Vulnerability from nvd – Published: 2026-07-08 17:24 – Updated: 2026-07-09 13:58

Title

pypdf: Possible large memory usage for wrong image dimensions

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with declared image size values that are much too large compared to the actual data, causing large memory usage in pypdf image parsing. This issue is fixed in version 6.14.0.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-789 - Memory Allocation with Excessive Size Value

Assigner

GitHub_M

References

4 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3888	x_refsource_MISC
https://github.com/py-pdf/pypdf/commit/c64583be16…	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.14.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.14.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-59938",
                "options": [
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                    "Exploitation": "none"
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-09T13:58:08.413307Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-09T13:58:17.678Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "pypdf",
          "vendor": "py-pdf",
          "versions": [
            {
              "status": "affected",
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            }
          ]
        }
      ],
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        {
          "lang": "en",
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
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            "vulnIntegrityImpact": "NONE"
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      ],
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      },
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          ],
          "url": "https://github.com/py-pdf/pypdf/security/advisories/GHSA-5qjq-93h5-hrgp"
        },
        {
          "name": "https://github.com/py-pdf/pypdf/pull/3888",
          "tags": [
            "x_refsource_MISC"
          ],
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        },
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          "name": "https://github.com/py-pdf/pypdf/commit/c64583be16b8e8763d8777075f8ecbf382014b7a",
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        },
        {
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            "x_refsource_MISC"
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      ],
      "source": {
        "advisory": "GHSA-5qjq-93h5-hrgp",
        "discovery": "UNKNOWN"
      },
      "title": "pypdf: Possible large memory usage for wrong image dimensions"
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  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-59938",
    "datePublished": "2026-07-08T17:24:29.959Z",
    "dateReserved": "2026-07-07T18:20:06.127Z",
    "dateUpdated": "2026-07-09T13:58:17.678Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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}

CVE-2026-59937 (GCVE-0-2026-59937)

Vulnerability from nvd – Published: 2026-07-08 17:25 – Updated: 2026-07-09 14:41

Title

pypdf: Possible long runtimes for repeated malformed cross-reference entries

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with repeated malformed cross-reference streams that cause pypdf to spend long runtimes recovering broken cross-reference table entries. This issue is fixed in version 6.14.0.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M

References

4 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3887	x_refsource_MISC
https://github.com/py-pdf/pypdf/commit/b5fc5aa714…	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.14.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.14.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-59937",
                "options": [
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                  },
                  {
                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
                "timestamp": "2026-07-09T14:38:02.608932Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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          "dateUpdated": "2026-07-09T14:41:30.071Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "pypdf",
          "vendor": "py-pdf",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 6.14.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with repeated malformed cross-reference streams that cause pypdf to spend long runtimes recovering broken cross-reference table entries. This issue is fixed in version 6.14.0."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
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          "descriptions": [
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      },
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          "name": "https://github.com/py-pdf/pypdf/security/advisories/GHSA-55h5-xmcq-c37v",
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            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/py-pdf/pypdf/security/advisories/GHSA-55h5-xmcq-c37v"
        },
        {
          "name": "https://github.com/py-pdf/pypdf/pull/3887",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/py-pdf/pypdf/pull/3887"
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CVE-2026-57204 (GCVE-0-2026-57204)

Vulnerability from nvd – Published: 2026-06-30 21:59 – Updated: 2026-07-01 14:29

Title

pypdf: Missing stream length values ignore defined limits

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.13.3, a maliciously crafted PDF can cause DoS. An attacker who uses this vulnerability can craft a PDF which leads to large memory usage, as MAX_DECLARED_STREAM_LENGTH is sometimes ignored. This requires parsing a content stream without a /Length value. This issue has been fixed in version 6.13.3.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M

References

2 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/releases/tag/6.13.3	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.13.3

Show details on NVD website

JSON

To clipboard

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CVE-2026-54651 (GCVE-0-2026-54651)

Vulnerability from nvd – Published: 2026-06-22 20:28 – Updated: 2026-06-23 12:10

Title

pypdf: Possible infinite loop when processing threads/articles in writer

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.13.1, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires merging a file with threads/articles into a writer. This vulnerability is fixed in 6.13.1.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3839	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.13.1	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.13.1

Show details on NVD website

JSON

To clipboard

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CVE-2026-54531 (GCVE-0-2026-54531)

Vulnerability from nvd – Published: 2026-06-22 20:26 – Updated: 2026-06-23 16:11

Title

pypdf: Possible infinite loop when processing outlines/bookmarks in writer

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.13.0, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires merging a file with outlines into a writer. This vulnerability is fixed in 6.13.0.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3830	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.13.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.13.0

Show details on NVD website

JSON

To clipboard

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CVE-2026-54530 (GCVE-0-2026-54530)

Vulnerability from nvd – Published: 2026-06-22 20:25 – Updated: 2026-06-23 16:11

Title

pypdf: Possible infinite loop when retrieving fonts for layout-mode text extraction

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.13.0, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires extracting the text in layout mode. This vulnerability is fixed in 6.13.0.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3830	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.13.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.13.0

Show details on NVD website

JSON

To clipboard

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CVE-2026-49461 (GCVE-0-2026-49461)

Vulnerability from nvd – Published: 2026-06-22 20:27 – Updated: 2026-06-23 15:54

Title

pypdf: Possible large memory usage for form XObjects during text extraction

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.2, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting the text of a page which contains a form XObject with self-references. This vulnerability is fixed in 6.12.2.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3805	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.12.2	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.12.2

Show details on NVD website

JSON

To clipboard

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CVE-2026-49460 (GCVE-0-2026-49460)

Vulnerability from nvd – Published: 2026-06-22 20:28 – Updated: 2026-06-23 15:54

Title

pypdf: Inefficient decoding of FlateDecode PNG predictor streams

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.2, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /FlateDecode filter with a PNG predictor. This vulnerability is fixed in 6.12.2.

Severity

5.1 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-407 - Inefficient Algorithmic Complexity

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3806	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.12.2	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.12.2

Show details on NVD website

JSON

To clipboard

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CVE-2026-48735 (GCVE-0-2026-48735)

Vulnerability from nvd – Published: 2026-05-28 14:49 – Updated: 2026-06-02 14:57

Title

pypdf: Manipulated XMP metadata streams can exhaust RAM

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.1, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing large XMP metadata, possibly with lots of unnecessary elements. This vulnerability is fixed in 6.12.1.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3796	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.12.1	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.12.1

Show details on NVD website

JSON

To clipboard

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  "containers": {
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CVE-2026-48156 (GCVE-0-2026-48156)

Vulnerability from nvd – Published: 2026-05-28 14:50 – Updated: 2026-05-30 02:08

Title

pypdf: Possible long runtimes for zero-only width values in cross-reference streams

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires cross-reference streams with /W [0 0 0] values and large /Size values. This vulnerability is fixed in 6.12.0.

Severity

5.1 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-834 - Excessive Iteration

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3791	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.12.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.12.0

Show details on NVD website

JSON

To clipboard

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CVE-2026-48155 (GCVE-0-2026-48155)

Vulnerability from nvd – Published: 2026-05-28 14:51 – Updated: 2026-05-28 15:57

Title

pypdf: Possible large memory usage for large offsets for layout mode text

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets. This vulnerability is fixed in 6.12.0.

Severity

4.8 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3790	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.12.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.12.0

Show details on NVD website

JSON

To clipboard

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CVE-2026-41314 (GCVE-0-2026-41314)

Vulnerability from nvd – Published: 2026-04-22 21:08 – Updated: 2026-04-23 14:21

Title

pypdf: Manipulated FlateDecode image dimensions can exhaust RAM

Summary

pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.2 can craft a PDF which leads to the RAM being exhausted. This requires accessing an image using `/FlateDecode` with large size values. This has been fixed in pypdf 6.10.2. As a workaround, one may apply the changes from the patch manually.

Severity

4.8 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-789 - Memory Allocation with Excessive Size Value

Assigner

GitHub_M

References

4 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3734	x_refsource_MISC
https://github.com/py-pdf/pypdf/commit/ac734dab4e…	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.10.2	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.10.2

Show details on NVD website

JSON

To clipboard

{
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CVE-2026-41313 (GCVE-0-2026-41313)

Vulnerability from nvd – Published: 2026-04-22 21:04 – Updated: 2026-04-23 16:24

Title

pypdf: Possible long runtimes for wrong size values in incremental mode

Summary

pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.2 can craft a PDF which leads to long runtimes. This requires loading a PDF with a large trailer `/Size` value in incremental mode. This has been fixed in pypdf 6.10.2. As a workaround, one may apply the changes from the patch manually.

Severity

4.8 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-834 - Excessive Iteration

Assigner

GitHub_M

References

4 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3735	x_refsource_MISC
https://github.com/py-pdf/pypdf/commit/c50a0104cf…	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.10.2	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.10.2

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-41313",
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CVE-2026-41312 (GCVE-0-2026-41312)

Vulnerability from nvd – Published: 2026-04-22 21:02 – Updated: 2026-04-23 13:45

Title

pypdf: Manipulated FlateDecode predictor parameters can exhaust RAM

Summary

pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.2 can craft a PDF which leads to the RAM being exhausted. This requires accessing a stream compressed using `/FlateDecode` with a `/Predictor` unequal 1 and large predictor parameters. This has been fixed in pypdf 6.10.2. As a workaround, one may apply the changes from the patch manually.

Severity

4.8 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-789 - Memory Allocation with Excessive Size Value

Assigner

GitHub_M

References

4 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3734	x_refsource_MISC
https://github.com/py-pdf/pypdf/commit/ac734dab4e…	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.10.2	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.10.2

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-41312",
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CVE-2026-41168 (GCVE-0-2026-41168)

Vulnerability from nvd – Published: 2026-04-22 20:49 – Updated: 2026-04-23 16:24

Title

pypdf has possible long runtimes for wrong size values in cross-reference and object streams

Summary

pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.1 can craft a PDF which leads to long runtimes. This requires cross-reference streams with wrong large `/Size` values or object streams with wrong large `/N` values. This has been fixed in pypdf 6.10.1. As a workaround, one may apply the changes from the patch manually.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-834 - Excessive Iteration

Assigner

GitHub_M

References

4 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3733	x_refsource_MISC
https://github.com/py-pdf/pypdf/commit/62338e9d36…	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.10.1	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.10.1

Show details on NVD website

JSON

To clipboard

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CVE-2026-59936 (GCVE-0-2026-59936)

Vulnerability from cvelistv5 – Published: 2026-07-08 19:34 – Updated: 2026-07-09 13:28

Title

pypdf: Possible infinite loop for not terminated inline images

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.1, an attacker can craft a PDF with a page content stream containing a not terminated inline image, causing an infinite loop during inline image end marker detection such as when extracting page text. This issue is fixed in version 6.14.1.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M

References

4 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3891	x_refsource_MISC
https://github.com/py-pdf/pypdf/commit/ec3b145961…	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.14.1	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.14.1

Show details on NVD website

JSON

To clipboard

{
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CVE-2026-59935 (GCVE-0-2026-59935)

Vulnerability from cvelistv5 – Published: 2026-07-08 19:34 – Updated: 2026-07-09 13:36

Title

pypdf: Possible infinite loop for not terminated inline images (ASCII85 and ASCIIHex filter)

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.2, an attacker can craft a PDF with a page content stream containing a not terminated inline image that uses the ASCII85 or ASCIIHex filters, causing an infinite loop during parsing such as when extracting page text. This issue is fixed in version 6.14.2.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

GitHub_M

References

4 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3892	x_refsource_MISC
https://github.com/py-pdf/pypdf/commit/5a33a46416…	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.14.2	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.14.2

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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        "metrics": [
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CVE-2026-59937 (GCVE-0-2026-59937)

Vulnerability from cvelistv5 – Published: 2026-07-08 17:25 – Updated: 2026-07-09 14:41

Title

pypdf: Possible long runtimes for repeated malformed cross-reference entries

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with repeated malformed cross-reference streams that cause pypdf to spend long runtimes recovering broken cross-reference table entries. This issue is fixed in version 6.14.0.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M

References

4 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3887	x_refsource_MISC
https://github.com/py-pdf/pypdf/commit/b5fc5aa714…	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.14.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.14.0

Show details on NVD website

JSON

To clipboard

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CVE-2026-59938 (GCVE-0-2026-59938)

Vulnerability from cvelistv5 – Published: 2026-07-08 17:24 – Updated: 2026-07-09 13:58

Title

pypdf: Possible large memory usage for wrong image dimensions

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with declared image size values that are much too large compared to the actual data, causing large memory usage in pypdf image parsing. This issue is fixed in version 6.14.0.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-789 - Memory Allocation with Excessive Size Value

Assigner

GitHub_M

References

4 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3888	x_refsource_MISC
https://github.com/py-pdf/pypdf/commit/c64583be16…	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.14.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.14.0

Show details on NVD website

JSON

To clipboard

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CVE-2026-57204 (GCVE-0-2026-57204)

Vulnerability from cvelistv5 – Published: 2026-06-30 21:59 – Updated: 2026-07-01 14:29

Title

pypdf: Missing stream length values ignore defined limits

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.13.3, a maliciously crafted PDF can cause DoS. An attacker who uses this vulnerability can craft a PDF which leads to large memory usage, as MAX_DECLARED_STREAM_LENGTH is sometimes ignored. This requires parsing a content stream without a /Length value. This issue has been fixed in version 6.13.3.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M

References

2 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/releases/tag/6.13.3	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.13.3

Show details on NVD website

JSON

To clipboard

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CVE-2026-54651 (GCVE-0-2026-54651)

Vulnerability from cvelistv5 – Published: 2026-06-22 20:28 – Updated: 2026-06-23 12:10

Title

pypdf: Possible infinite loop when processing threads/articles in writer

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.13.1, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires merging a file with threads/articles into a writer. This vulnerability is fixed in 6.13.1.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3839	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.13.1	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.13.1

Show details on NVD website

JSON

To clipboard

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CVE-2026-49460 (GCVE-0-2026-49460)

Vulnerability from cvelistv5 – Published: 2026-06-22 20:28 – Updated: 2026-06-23 15:54

Title

pypdf: Inefficient decoding of FlateDecode PNG predictor streams

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.2, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /FlateDecode filter with a PNG predictor. This vulnerability is fixed in 6.12.2.

Severity

5.1 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-407 - Inefficient Algorithmic Complexity

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3806	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.12.2	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.12.2

Show details on NVD website

JSON

To clipboard

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CVE-2026-49461 (GCVE-0-2026-49461)

Vulnerability from cvelistv5 – Published: 2026-06-22 20:27 – Updated: 2026-06-23 15:54

Title

pypdf: Possible large memory usage for form XObjects during text extraction

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.2, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting the text of a page which contains a form XObject with self-references. This vulnerability is fixed in 6.12.2.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3805	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.12.2	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.12.2

Show details on NVD website

JSON

To clipboard

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CVE-2026-54531 (GCVE-0-2026-54531)

Vulnerability from cvelistv5 – Published: 2026-06-22 20:26 – Updated: 2026-06-23 16:11

Title

pypdf: Possible infinite loop when processing outlines/bookmarks in writer

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.13.0, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires merging a file with outlines into a writer. This vulnerability is fixed in 6.13.0.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3830	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.13.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.13.0

Show details on NVD website

JSON

To clipboard

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CVE-2026-54530 (GCVE-0-2026-54530)

Vulnerability from cvelistv5 – Published: 2026-06-22 20:25 – Updated: 2026-06-23 16:11

Title

pypdf: Possible infinite loop when retrieving fonts for layout-mode text extraction

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.13.0, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires extracting the text in layout mode. This vulnerability is fixed in 6.13.0.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3830	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.13.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.13.0

Show details on NVD website

JSON

To clipboard

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CVE-2026-48155 (GCVE-0-2026-48155)

Vulnerability from cvelistv5 – Published: 2026-05-28 14:51 – Updated: 2026-05-28 15:57

Title

pypdf: Possible large memory usage for large offsets for layout mode text

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets. This vulnerability is fixed in 6.12.0.

Severity

4.8 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3790	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.12.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.12.0

Show details on NVD website

JSON

To clipboard

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CVE-2026-48156 (GCVE-0-2026-48156)

Vulnerability from cvelistv5 – Published: 2026-05-28 14:50 – Updated: 2026-05-30 02:08

Title

pypdf: Possible long runtimes for zero-only width values in cross-reference streams

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires cross-reference streams with /W [0 0 0] values and large /Size values. This vulnerability is fixed in 6.12.0.

Severity

5.1 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-834 - Excessive Iteration

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3791	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.12.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.12.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-48156",
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        }
      ],
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            "attackVector": "LOCAL",
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            "baseSeverity": "MEDIUM",
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            "subAvailabilityImpact": "NONE",
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CVE-2026-48735 (GCVE-0-2026-48735)

Vulnerability from cvelistv5 – Published: 2026-05-28 14:49 – Updated: 2026-06-02 14:57

Title

pypdf: Manipulated XMP metadata streams can exhaust RAM

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.1, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing large XMP metadata, possibly with lots of unnecessary elements. This vulnerability is fixed in 6.12.1.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/py-pdf/pypdf/security/advisori…	x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3796	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.12.1	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.12.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
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                "id": "CVE-2026-48735",
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                "timestamp": "2026-06-02T14:56:55.997922Z",
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          "lang": "en",
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        }
      ],
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            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
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            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
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            "vulnIntegrityImpact": "NONE"
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        "dateUpdated": "2026-05-28T14:49:11.814Z",
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}

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80 vulnerabilities by py-pdf

CVE-2026-59936 (GCVE-0-2026-59936)

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CVE-2026-48735 (GCVE-0-2026-48735)

CVE-2026-48156 (GCVE-0-2026-48156)

CVE-2026-48155 (GCVE-0-2026-48155)

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CVE-2026-41312 (GCVE-0-2026-41312)

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CVE-2026-59936 (GCVE-0-2026-59936)

CVE-2026-59935 (GCVE-0-2026-59935)

CVE-2026-59937 (GCVE-0-2026-59937)

CVE-2026-59938 (GCVE-0-2026-59938)

CVE-2026-57204 (GCVE-0-2026-57204)

CVE-2026-54651 (GCVE-0-2026-54651)

CVE-2026-49460 (GCVE-0-2026-49460)

CVE-2026-49461 (GCVE-0-2026-49461)

CVE-2026-54531 (GCVE-0-2026-54531)

CVE-2026-54530 (GCVE-0-2026-54530)

CVE-2026-48155 (GCVE-0-2026-48155)

CVE-2026-48156 (GCVE-0-2026-48156)

CVE-2026-48735 (GCVE-0-2026-48735)