CVE-2026-8454

{
  "id": "CVE-2026-8454",
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "published": "2026-05-15T12:17:09.330",
  "lastModified": "2026-10-26T14:10:00.130",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Imager::File::GIF versions through 1.002 for Perl allow a heap out of bounds (OOB) write on crafted multi-frame GIF files.\n\nImager::File::GIF's i_readgif_multi_low allocates a single per-row buffer GifRow sized for the GIF's global screen width 'SWidth' and reuses it across every image in the file.\n\nThe page-match branch validates Image.Width + Image.Left > SWidth before each DGifGetLine write, but the parallel skip-image branch at imgif.c:790-805 calls DGifGetLine(GifFile, GifRow, Width) with no such check."
    },
    {
      "lang": "es",
      "value": "Las versiones de Imager::File::GIF hasta la 1.002 para Perl permiten una escritura fuera de límites del montón (OOB) en archivos GIF multifotograma manipulados.\n\nLa función i_readgif_multi_low de Imager::File::GIF asigna un único búfer por fila, GifRow, dimensionado para el ancho de pantalla global del GIF, ’SWidth’, y lo reutiliza en cada imagen del archivo.\n\nLa rama de coincidencia de página valida que Image.Width + Image.Left > SWidth antes de cada escritura de DGifGetLine, pero la rama paralela de omisión de imagen en imgif.c:790-805 llama a DGifGetLine(GifFile, GifRow, Width) sin dicha verificación."
    }
  ],
  "affected": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "affectedData": [
        {
          "vendor": "TONYC",
          "product": "Imager::File::GIF",
          "defaultStatus": "unaffected",
          "collectionURL": "https://cpan.org/modules",
          "packageName": "Imager-File-GIF",
          "programFiles": [
            "GIF/imgif.c"
          ],
          "programRoutines": [
            {
              "name": "Imager::File::GIF::i_readgif_multi_low"
            }
          ],
          "repo": "https://github.com/tonycoz/imager",
          "versions": [
            {
              "version": "0",
              "lessThanOrEqual": "1.002",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.4
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-05-15T14:24:00.591482Z",
          "id": "CVE-2026-8454",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:tonyc:imager\\:\\:file\\:\\:gif:*:*:*:*:*:perl:*:*",
              "versionEndExcluding": "1.003",
              "matchCriteriaId": "810B2434-A882-422F-8BF1-B6C8AAB87921"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/tonycoz/imager/commit/782e9c06cc75a0f7eed383f39522f51f44598b04.patch",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://metacpan.org/release/TONYC/Imager-File-GIF-1.003/source/Changes",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "tags": [
        "Release Notes"
      ]
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2026/05/15/15",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ]
    }
  ]
}