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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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  },
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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

{
  "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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  "containers": {
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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

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  "containers": {
    "adp": [
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        "metrics": [
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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": [
          {
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                "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-2026-40260 (GCVE-0-2026-40260)

Vulnerability from nvd – Published: 2026-04-16 23:18 – Updated: 2026-04-17 18:42

Title

pypdf: Manipulated XMP metadata entity declarations can exhaust RAM

Summary

pypdf is a free and open-source pure-python PDF library. In versions prior to 6.10.0, manipulated XMP metadata entity declarations can exhaust RAM. An attacker who exploits this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the XMP metadata. This issue has been fixed in version 6.10.0.

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-776 - Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

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/3724	x_refsource_MISC
https://github.com/py-pdf/pypdf/commit/b15a374e5c…	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.10.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.10.0

Show details on NVD website

JSON

To clipboard

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CVE-2026-33699 (GCVE-0-2026-33699)

Vulnerability from nvd – Published: 2026-03-26 23:58 – Updated: 2026-03-27 19:59

Title

pypdf: Possible infinite loop during recovery attempts in DictionaryObject.read_from_stream

Summary

pypdf is a free and open-source pure-python PDF library. Versions prior to 6.9.2 have a vulnerability in which an attacker can craft a PDF which leads to an infinite loop. This requires reading a file in non-strict mode. This has been fixed in pypdf 6.9.2. If users cannot upgrade yet, consider applying the changes from the patch manually.

Severity

4.6 (Medium)


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

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/3693	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.9.2	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.9.2

Show details on NVD website

JSON

To clipboard

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    "adp": [
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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

{
  "containers": {
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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

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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

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

Vulnerability from cvelistv5 – 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 cvelistv5 – 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

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

Vulnerability from cvelistv5 – 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

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CVE-2026-41168 (GCVE-0-2026-41168)

Vulnerability from cvelistv5 – 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-2026-40260 (GCVE-0-2026-40260)

Vulnerability from cvelistv5 – Published: 2026-04-16 23:18 – Updated: 2026-04-17 18:42

Title

pypdf: Manipulated XMP metadata entity declarations can exhaust RAM

Summary

pypdf is a free and open-source pure-python PDF library. In versions prior to 6.10.0, manipulated XMP metadata entity declarations can exhaust RAM. An attacker who exploits this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the XMP metadata. This issue has been fixed in version 6.10.0.

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-776 - Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

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/3724	x_refsource_MISC
https://github.com/py-pdf/pypdf/commit/b15a374e5c…	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.10.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.10.0

Show details on NVD website

JSON

To clipboard

{
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        }
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      "metrics": [
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CVE-2026-33699 (GCVE-0-2026-33699)

Vulnerability from cvelistv5 – Published: 2026-03-26 23:58 – Updated: 2026-03-27 19:59

Title

pypdf: Possible infinite loop during recovery attempts in DictionaryObject.read_from_stream

Summary

pypdf is a free and open-source pure-python PDF library. Versions prior to 6.9.2 have a vulnerability in which an attacker can craft a PDF which leads to an infinite loop. This requires reading a file in non-strict mode. This has been fixed in pypdf 6.9.2. If users cannot upgrade yet, consider applying the changes from the patch manually.

Severity

4.6 (Medium)


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

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/3693	x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.9.2	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
py-pdf	pypdf	Affected: < 6.9.2

Show details on NVD website

JSON

To clipboard

{
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        }
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Find a vulnerability

Search criteria

70 vulnerabilities found for pypdf by py-pdf

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

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

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

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

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

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

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

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

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

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

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

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

CVE-2026-41168 (GCVE-0-2026-41168)

CVE-2026-40260 (GCVE-0-2026-40260)

CVE-2026-33699 (GCVE-0-2026-33699)

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)

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

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

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

CVE-2026-41168 (GCVE-0-2026-41168)

CVE-2026-40260 (GCVE-0-2026-40260)

CVE-2026-33699 (GCVE-0-2026-33699)