Vulnerability-Lookup

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

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

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

No CVSS data available.

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

{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "Archive-Tar",
          "product": "Archive::Tar",
          "programFiles": [
            "lib/Archive/Tar.pm"
          ],
          "programRoutines": [
            {
              "name": "Archive::Tar::_make_special_file"
            }
          ],
          "repo": "https://github.com/jib/archive-tar-new",
          "vendor": "BINGOS",
          "versions": [
            {
              "lessThan": "3.08",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
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          "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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-59",
              "description": "CWE-59 Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-26T00:17:19.110Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "patch"
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          "url": "https://github.com/jib/archive-tar-new/commit/17c873492a05eddc0de18c1485e0b2cccd5a9158.patch"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://metacpan.org/release/BINGOS/Archive-Tar-3.08/changes"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-42497"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to Archive::Tar 3.08 or later."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2026-04-12T00:00:00.000Z",
          "value": "Issue reported."
        },
        {
          "lang": "en",
          "time": "2026-05-22T00:00:00.000Z",
          "value": "Version 3.08 released."
        }
      ],
      "title": "Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory",
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-42496",
    "datePublished": "2026-05-26T00:17:19.110Z",
    "dateReserved": "2026-04-27T18:34:48.417Z",
    "dateUpdated": "2026-05-26T00:17:19.110Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-42496",
      "date": "2026-05-28",
      "epss": "0.0004",
      "percentile": "0.12368"
    },
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    "vulnrichment": {
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      "cveMetadata": "{\"cveId\": \"CVE-2026-42496\", \"assignerOrgId\": \"9b29abf9-4ab0-4765-b253-1875cd9b441e\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"CPANSec\", \"dateReserved\": \"2026-04-27T18:34:48.417Z\", \"datePublished\": \"2026-05-26T00:17:19.110Z\", \"dateUpdated\": \"2026-05-28T13:08:37.326Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-42496

Vulnerability from fkie_nvd - Published: 2026-05-26 02:16 - Updated: 2026-05-27 18:37

Severity

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": "2026-05-27T18:37:26.270",
  "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"
      }
    ]
  },
  "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"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-42497"
    }
  ],
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "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"
    }
  ]
}

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

Tags

Sightings

Nomenclature