FKIE_CVE-2026-48961

Vulnerability from fkie_nvd - Published: 2026-05-27 04:16 - Updated: 2026-07-24 12:10
Severity
7.3 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Summary
IO::Compress versions from 2.207 before 2.220 for Perl ship a zipdetails CLI tool that crashes with undefined subroutine on Info-ZIP Unix Extra Field with 8-byte UID or GID. When decode_ux() in bin/zipdetails handles an Info-ZIP Unix Extra Field (tag 0x7875) with UID Size or GID Size set to 8, causing zipdetails to decode an 8-byte UID or GID value, it dispatches through decodeLitteEndian(), which calls a misnamed helper unpackValueQ. The actual function defined in the same file is unpackValue_Q (with underscore); the call raises 'Undefined subroutine &main::unpackValueQ' and the script exits with status 255. Library callers of IO::Compress and IO::Uncompress are not affected; the defect is in the bundled CLI tool.
References
9b29abf9-4ab0-4765-b253-1875cd9b441ehttps://github.com/pmqs/IO-Compress/commit/33c89d03d6e746ed2ead4f2f6570d47864c61bc7.patch
9b29abf9-4ab0-4765-b253-1875cd9b441ehttps://metacpan.org/release/PMQS/IO-Compress-2.220/changes
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2026/05/27/3
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "IO-Compress",
          "product": "IO::Compress",
          "programFiles": [
            "bin/zipdetails"
          ],
          "programRoutines": [
            {
              "name": "main::decode_ux"
            },
            {
              "name": "main::decodeLitteEndian"
            }
          ],
          "repo": "https://github.com/pmqs/IO-Compress",
          "vendor": "PMQS",
          "versions": [
            {
              "lessThan": "2.220",
              "status": "affected",
              "version": "2.207",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "IO::Compress versions from 2.207 before 2.220 for Perl ship a zipdetails CLI tool that crashes with undefined subroutine on Info-ZIP Unix Extra Field with 8-byte UID or GID.\n\nWhen decode_ux() in bin/zipdetails handles an Info-ZIP Unix Extra Field (tag 0x7875) with UID Size or GID Size set to 8, causing zipdetails to decode an 8-byte UID or GID value, it dispatches through decodeLitteEndian(), which calls a misnamed helper unpackValueQ. The actual function defined in the same file is unpackValue_Q (with underscore); the call raises \u0027Undefined subroutine \u0026main::unpackValueQ\u0027 and the script exits with status 255.\n\nLibrary callers of IO::Compress and IO::Uncompress are not affected; the defect is in the bundled CLI tool."
    },
    {
      "lang": "es",
      "value": "Las versiones de IO::Compress desde la 2.207 anteriores a la 2.220 para Perl distribuyen una herramienta CLI zipdetails que falla con subrutina indefinida en el campo extra Unix de Info-ZIP con UID o GID de 8 bytes.\n\nCuando decode_ux() en bin/zipdetails maneja un campo extra Unix de Info-ZIP (etiqueta 0x7875) con el tama\u00f1o de UID o el tama\u00f1o de GID establecido en 8, lo que hace que zipdetails decodifique un valor UID o GID de 8 bytes, se despacha a trav\u00e9s de decodeLitteEndian(), que llama a una funci\u00f3n auxiliar mal nombrada unpackValueQ. La funci\u00f3n real definida en el mismo archivo es unpackValue_Q (con guion bajo); la llamada genera \u0027Undefined subroutine \u0026main::unpackValueQ\u0027 y el script sale con estado 255.\n\nLos llamadores de biblioteca de IO::Compress y IO::Uncompress no se ven afectados; el defecto est\u00e1 en la herramienta CLI incluida."
    }
  ],
  "id": "CVE-2026-48961",
  "lastModified": "2026-07-24T12:10:00.210",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 7.3,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.4,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-48961",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-29T15:51:41.495552Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-27T04:16:31.210",
  "references": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://github.com/pmqs/IO-Compress/commit/33c89d03d6e746ed2ead4f2f6570d47864c61bc7.patch"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://metacpan.org/release/PMQS/IO-Compress-2.220/changes"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/27/3"
    }
  ],
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-755"
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary"
    }
  ]
}



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