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    8 vulnerabilities by decompress_project

    CVE-2026-39246 (GCVE-0-2026-39246)

    Vulnerability from nvd – Published: 2026-07-09 00:00 – Updated: 2026-07-10 17:27
    VLAI
    Summary
    decompress before 4.2.2 allows arbitrary symlink creation during archive extraction. When processing symlink entries (type === 'symlink'), the x.linkname field from the archive is passed directly to fs.symlink() without validation (index.js line 121). The preventWritingThroughSymlink check on line 98 only applies to file entries, not symlink creation. An attacker can craft an archive with symlink entries pointing to sensitive files outside the extraction directory (e.g., /etc/passwd), enabling information disclosure when the application reads the extracted contents.
    Severity
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • n/a
    • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
    Assigner
    References
    Show details on NVD website
    To clipboard 

    {
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    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-39246",
                "options": [
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                    "Exploitation": "poc"
                  },
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                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-10T17:09:33.857465Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-59",
                "description": "CWE-59 Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-10T17:27:46.481Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/kevva/decompress/issues/114"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "decompress before 4.2.2 allows arbitrary symlink creation during archive extraction. When processing symlink entries (type === \u0027symlink\u0027), the x.linkname field from the archive is passed directly to fs.symlink() without validation (index.js line 121). The preventWritingThroughSymlink check on line 98 only applies to file entries, not symlink creation. An attacker can craft an archive with symlink entries pointing to sensitive files outside the extraction directory (e.g., /etc/passwd), enabling information disclosure when the application reads the extracted contents."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
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              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-09T21:17:49.793Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/kevva/decompress"
        },
        {
          "url": "https://www.npmjs.com/package/decompress"
        },
        {
          "url": "https://github.com/kevva/decompress/issues/114"
        }
      ]
    }
  },
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    "cveId": "CVE-2026-39246",
    "datePublished": "2026-07-09T00:00:00.000Z",
    "dateReserved": "2026-04-06T00:00:00.000Z",
    "dateUpdated": "2026-07-10T17:27:46.481Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-39245 (GCVE-0-2026-39245)

    Vulnerability from nvd – Published: 2026-07-09 00:00 – Updated: 2026-07-10 15:27
    VLAI
    Summary
    decompress before 4.2.2 contains an improper path containment check that enables directory traversal and arbitrary file write. The safeMakeDir function (index.js line 29) and the extraction path validation (index.js line 106) use String.indexOf() to verify the resolved path is within the output directory: realDestinationDir.indexOf(realOutputPath) !== 0. This check is flawed because it does not enforce a path separator boundary. For example, "/tmp/app_config".indexOf("/tmp/app") returns 0, incorrectly passing the check even though /tmp/app_config is outside /tmp/app. Combined with the unvalidated symlink creation in the same package, an attacker can write arbitrary files to directories adjacent to the extraction target. This is a bypass of the fix for CVE-2020-12265. The correct check requires appending a path separator: realParentPath.indexOf(realOutputPath + path.sep) !== 0.
    Severity
    6.2 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • n/a
    • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
    Assigner
    References
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "NONE",
              "baseScore": 6.2,
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              "confidentialityImpact": "NONE",
              "integrityImpact": "HIGH",
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          },
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                "options": [
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                "timestamp": "2026-07-10T15:19:01.067636Z",
                "version": "2.0.3"
              },
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          }
        ],
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                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-10T15:27:09.755Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
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          {
            "tags": [
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            ],
            "url": "https://github.com/kevva/decompress/issues/115"
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        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
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          "vendor": "n/a",
          "versions": [
            {
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              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "decompress before 4.2.2 contains an improper path containment check that enables directory traversal and arbitrary file write. The safeMakeDir function (index.js line 29) and the extraction path validation (index.js line 106) use String.indexOf() to verify the resolved path is within the output directory: realDestinationDir.indexOf(realOutputPath) !== 0. This check is flawed because it does not enforce a path separator boundary. For example, \"/tmp/app_config\".indexOf(\"/tmp/app\") returns 0, incorrectly passing the check even though /tmp/app_config is outside /tmp/app. Combined with the unvalidated symlink creation in the same package, an attacker can write arbitrary files to directories adjacent to the extraction target. This is a bypass of the fix for CVE-2020-12265. The correct check requires appending a path separator: realParentPath.indexOf(realOutputPath + path.sep) !== 0."
        }
      ],
      "problemTypes": [
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      ],
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        "dateUpdated": "2026-07-09T21:33:19.574Z",
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      },
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        {
          "url": "https://github.com/kevva/decompress"
        },
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          "url": "https://www.npmjs.com/package/decompress"
        },
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          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12265"
        },
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          "url": "https://github.com/kevva/decompress/issues/115"
        }
      ]
    }
  },
  "cveMetadata": {
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    "assignerShortName": "mitre",
    "cveId": "CVE-2026-39245",
    "datePublished": "2026-07-09T00:00:00.000Z",
    "dateReserved": "2026-04-06T00:00:00.000Z",
    "dateUpdated": "2026-07-10T15:27:09.755Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-39243 (GCVE-0-2026-39243)

    Vulnerability from nvd – Published: 2026-07-09 00:00 – Updated: 2026-07-10 15:25
    VLAI
    Summary
    decompress before 4.2.2 allows arbitrary hardlink creation during archive extraction, enabling file read disclosure and file corruption. When processing hardlink entries (type === 'link'), the x.linkname field from the archive is passed directly to fs.link() without validation (index.js line 113). An attacker can craft an archive with a hardlink entry whose linkname is an absolute path to any file on the same filesystem. This creates a hardlink inside the extraction directory that shares the same inode as the target file, enabling both reading and overwriting the original file's content. Hardlinks are limited to files on the same filesystem and cannot target directories.
    Severity
    5.5 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • n/a
    • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
    Assigner
    References
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
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              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
              "version": "3.1"
            }
          },
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                "id": "CVE-2026-39243",
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                "timestamp": "2026-07-10T15:24:02.481203Z",
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        ],
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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          "vendor": "n/a",
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      ],
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        {
          "lang": "en",
          "value": "decompress before 4.2.2 allows arbitrary hardlink creation during archive extraction, enabling file read disclosure and file corruption. When processing hardlink entries (type === \u0027link\u0027), the x.linkname field from the archive is passed directly to fs.link() without validation (index.js line 113). An attacker can craft an archive with a hardlink entry whose linkname is an absolute path to any file on the same filesystem. This creates a hardlink inside the extraction directory that shares the same inode as the target file, enabling both reading and overwriting the original file\u0027s content. Hardlinks are limited to files on the same filesystem and cannot target directories."
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  "dataVersion": "5.2"
}

    CVE-2020-12265 (GCVE-0-2020-12265)

    Vulnerability from nvd – Published: 2020-04-26 16:46 – Updated: 2024-08-04 11:48
    VLAI
    Summary
    The decompress package before 4.2.1 for Node.js is vulnerable to Arbitrary File Write via ../ in an archive member, when a symlink is used, because of Directory Traversal.
    Severity
    No CVSS data available.
    CWE
    • n/a
    Assigner
    References
    Show details on NVD website
    To clipboard 

    {
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          "dateUpdated": "2024-08-04T11:48:58.593Z",
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    CVE-2026-39243 (GCVE-0-2026-39243)

    Vulnerability from cvelistv5 – Published: 2026-07-09 00:00 – Updated: 2026-07-10 15:25
    VLAI
    Summary
    decompress before 4.2.2 allows arbitrary hardlink creation during archive extraction, enabling file read disclosure and file corruption. When processing hardlink entries (type === 'link'), the x.linkname field from the archive is passed directly to fs.link() without validation (index.js line 113). An attacker can craft an archive with a hardlink entry whose linkname is an absolute path to any file on the same filesystem. This creates a hardlink inside the extraction directory that shares the same inode as the target file, enabling both reading and overwriting the original file's content. Hardlinks are limited to files on the same filesystem and cannot target directories.
    Severity
    5.5 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • n/a
    • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
    Assigner
    References
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "adp": [
      {
        "metrics": [
          {
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              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "NONE",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
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                "description": "CWE-59 Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
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                "type": "CWE"
              }
            ]
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        "providerMetadata": {
          "dateUpdated": "2026-07-10T15:25:09.237Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/kevva/decompress/issues/113"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
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              "version": "n/a"
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      ],
      "descriptions": [
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          "lang": "en",
          "value": "decompress before 4.2.2 allows arbitrary hardlink creation during archive extraction, enabling file read disclosure and file corruption. When processing hardlink entries (type === \u0027link\u0027), the x.linkname field from the archive is passed directly to fs.link() without validation (index.js line 113). An attacker can craft an archive with a hardlink entry whose linkname is an absolute path to any file on the same filesystem. This creates a hardlink inside the extraction directory that shares the same inode as the target file, enabling both reading and overwriting the original file\u0027s content. Hardlinks are limited to files on the same filesystem and cannot target directories."
        }
      ],
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              "description": "n/a",
              "lang": "en",
              "type": "text"
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        "dateUpdated": "2026-07-09T21:16:23.342Z",
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      "references": [
        {
          "url": "https://github.com/kevva/decompress"
        },
        {
          "url": "https://www.npmjs.com/package/decompress"
        },
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    "cveId": "CVE-2026-39243",
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    CVE-2026-39246 (GCVE-0-2026-39246)

    Vulnerability from cvelistv5 – Published: 2026-07-09 00:00 – Updated: 2026-07-10 17:27
    VLAI
    Summary
    decompress before 4.2.2 allows arbitrary symlink creation during archive extraction. When processing symlink entries (type === 'symlink'), the x.linkname field from the archive is passed directly to fs.symlink() without validation (index.js line 121). The preventWritingThroughSymlink check on line 98 only applies to file entries, not symlink creation. An attacker can craft an archive with symlink entries pointing to sensitive files outside the extraction directory (e.g., /etc/passwd), enabling information disclosure when the application reads the extracted contents.
    Severity
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • n/a
    • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
    Assigner
    References
    Show details on NVD website
    To clipboard 

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              "attackVector": "NETWORK",
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              "baseScore": 7.5,
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              "confidentialityImpact": "NONE",
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    CVE-2026-39245 (GCVE-0-2026-39245)

    Vulnerability from cvelistv5 – Published: 2026-07-09 00:00 – Updated: 2026-07-10 15:27
    VLAI
    Summary
    decompress before 4.2.2 contains an improper path containment check that enables directory traversal and arbitrary file write. The safeMakeDir function (index.js line 29) and the extraction path validation (index.js line 106) use String.indexOf() to verify the resolved path is within the output directory: realDestinationDir.indexOf(realOutputPath) !== 0. This check is flawed because it does not enforce a path separator boundary. For example, "/tmp/app_config".indexOf("/tmp/app") returns 0, incorrectly passing the check even though /tmp/app_config is outside /tmp/app. Combined with the unvalidated symlink creation in the same package, an attacker can write arbitrary files to directories adjacent to the extraction target. This is a bypass of the fix for CVE-2020-12265. The correct check requires appending a path separator: realParentPath.indexOf(realOutputPath + path.sep) !== 0.
    Severity
    6.2 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • n/a
    • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
    Assigner
    References
    Show details on NVD website
    To clipboard 

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    CVE-2020-12265 (GCVE-0-2020-12265)

    Vulnerability from cvelistv5 – Published: 2020-04-26 16:46 – Updated: 2024-08-04 11:48
    VLAI
    Summary
    The decompress package before 4.2.1 for Node.js is vulnerable to Arbitrary File Write via ../ in an archive member, when a symlink is used, because of Directory Traversal.
    Severity
    No CVSS data available.
    CWE
    • n/a
    Assigner
    References
    Show details on NVD website
    To clipboard 

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