Vulnerability-Lookup

CVE-2026-42496 (GCVE-0-2026-42496)

Vulnerability from cvelistv5 – Published: 2026-05-26 00:17 – Updated: 2026-05-28 13:08

Title

Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory

Summary

Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory. _make_special_file() passes the tar header's linkname to symlink() without validating it against absolute paths or .. segments. The secure-extract mode check that guards regular file extraction does not cover the symlink target. A subsequent open through the extracted name reads or writes the attacker chosen path.

Severity

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Assigner

CPANSec

References

3 references

URL	Tags
https://github.com/jib/archive-tar-new/commit/17c…	patch
https://metacpan.org/release/BINGOS/Archive-Tar-3…	release-notes
https://www.cve.org/CVERecord?id=CVE-2026-42497	related

Impacted products

1 product

Vendor	Product	Version
BINGOS	Archive::Tar	Affected: 0 , < 3.08 (custom)

Show details on NVD website

JSON

To clipboard

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              "attackVector": "NETWORK",
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          "time": "2026-05-22T00:00:00.000Z",
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    "datePublished": "2026-05-26T00:17:19.110Z",
    "dateReserved": "2026-04-27T18:34:48.417Z",
    "dateUpdated": "2026-05-28T13:08:37.326Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.2",
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FKIE_CVE-2026-42496

Vulnerability from fkie_nvd - Published: 2026-05-26 02:16 - Updated: 2026-05-28 14:16

Severity

9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Summary

References

URL	Tags
9b29abf9-4ab0-4765-b253-1875cd9b441e	https://github.com/jib/archive-tar-new/commit/17c873492a05eddc0de18c1485e0b2cccd5a9158.patch	Patch
9b29abf9-4ab0-4765-b253-1875cd9b441e	https://metacpan.org/release/BINGOS/Archive-Tar-3.08/changes	Release Notes
9b29abf9-4ab0-4765-b253-1875cd9b441e	https://www.cve.org/CVERecord?id=CVE-2026-42497	Third Party Advisory

Impacted products

	Vendor	Product	Version
	archive\	\	tar_project

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:archive\\:\\:tar_project:archive\\:\\:tar:*:*:*:*:*:perl:*:*",
              "matchCriteriaId": "CE0EEC28-8DB1-42B8-9D87-5E9AA5D1C168",
              "versionEndExcluding": "3.08",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory.\n\n_make_special_file() passes the tar header\u0027s linkname to symlink() without validating it against absolute paths or .. segments. The secure-extract mode check that guards regular file extraction does not cover the symlink target.\n\nA subsequent open through the extracted name reads or writes the attacker chosen path."
    }
  ],
  "id": "CVE-2026-42496",
  "lastModified": "2026-05-28T14:16:20.023",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-05-26T02:16:40.130",
  "references": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/jib/archive-tar-new/commit/17c873492a05eddc0de18c1485e0b2cccd5a9158.patch"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "tags": [
        "Release Notes"
      ],
      "url": "https://metacpan.org/release/BINGOS/Archive-Tar-3.08/changes"
    },
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      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "tags": [
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    }
  ],
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "vulnStatus": "Modified",
  "weaknesses": [
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        {
          "lang": "en",
          "value": "CWE-59"
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary"
    }
  ]
}

GHSA-8P37-Q9QQ-HGX8

Vulnerability from github – Published: 2026-05-26 13:30 – Updated: 2026-05-27 21:31

Details

Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory.

_make_special_file() passes the tar header's linkname to symlink() without validating it against absolute paths or .. segments. The secure-extract mode check that guards regular file extraction does not cover the symlink target.

A subsequent open through the extracted name reads or writes the attacker chosen path.

Severity

9.1 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-42496"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-26T02:16:40Z",
    "severity": "CRITICAL"
  },
  "details": "Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory.\n\n_make_special_file() passes the tar header\u0027s linkname to symlink() without validating it against absolute paths or .. segments. The secure-extract mode check that guards regular file extraction does not cover the symlink target.\n\nA subsequent open through the extracted name reads or writes the attacker chosen path.",
  "id": "GHSA-8p37-q9qq-hgx8",
  "modified": "2026-05-27T21:31:19Z",
  "published": "2026-05-26T13:30:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42496"
    },
    {
      "type": "WEB",
      "url": "https://github.com/jib/archive-tar-new/commit/17c873492a05eddc0de18c1485e0b2cccd5a9158.patch"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/release/BINGOS/Archive-Tar-3.08/changes"
    },
    {
      "type": "WEB",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-42497"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

MSRC_CVE-2026-42496

Vulnerability from csaf_microsoft - Published: 2026-05-02 00:00 - Updated: 2026-05-29 01:08

Summary

Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory

Notes

Additional Resources: To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

Disclaimer: The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

CVE-2026-42496

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
Unresolved product id: 17084-1		—	None Available

References

4 references

URL	Category
https://msrc.microsoft.com/csaf/vex/2026/msrc_cve…	self
https://support.microsoft.com/lifecycle	external
https://www.first.org/cvss	external
https://msrc.microsoft.com/csaf/vex/2026/msrc_cve…	self

JSON

To clipboard

{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2026-42496 Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-42496.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory",
    "tracking": {
      "current_release_date": "2026-05-29T01:08:01.000Z",
      "generator": {
        "date": "2026-05-29T07:23:45.807Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2026-42496",
      "initial_release_date": "2026-05-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-05-29T01:08:01.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "3.0",
                "product": {
                  "name": "Azure Linux 3.0",
                  "product_id": "17084"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "azl3 perl 0:5.38.2-509.azl3",
                "product": {
                  "name": "azl3 perl 0:5.38.2-509.azl3",
                  "product_id": "1"
                }
              }
            ],
            "category": "product_name",
            "name": "perl"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 perl 0:5.38.2-509.azl3 as a component of Azure Linux 3.0",
          "product_id": "17084-1"
        },
        "product_reference": "1",
        "relates_to_product_reference": "17084"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-42496",
      "cwe": {
        "id": "CWE-59",
        "name": "Improper Link Resolution Before File Access (\u0027Link Following\u0027)"
      },
      "notes": [
        {
          "category": "general",
          "text": "CPANSec",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "known_affected": [
          "17084-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-42496 Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-42496.json"
        }
      ],
      "remediations": [
        {
          "category": "none_available",
          "date": "2026-05-29T01:08:01.000Z",
          "details": "There is no fix available for this vulnerability as of now",
          "product_ids": [
            "17084-1"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 9.1,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "17084-1"
          ]
        }
      ],
      "title": "Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-42496 (GCVE-0-2026-42496)

FKIE_CVE-2026-42496

GHSA-8P37-Q9QQ-HGX8

MSRC_CVE-2026-42496

Tags

Sightings

Nomenclature