{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "sail",
          "vendor": "HappySeaFox",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.0.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "SAIL is a cross-platform library for loading and saving images with support for animation, metadata, and ICC profiles. Prior to version 1.0.2, the built-in WebP decoder can crash during loader initialization when processing a malformed animated WebP file with inconsistent container or `ANMF` frame metadata. In `sail_codec_load_init_v8_webp()` in `src/sail-codecs/webp/webp.c`, `WebPDemuxGetI` with `WEBP_FF_CANVAS_WIDTH` can return a zero `image_local-\u003ewidth`, which is then used as a divisor when calculating `bytes_per_pixel` from the image row size. The division happens before frame decoding and before generic image skeleton validation in `src/sail/sail_advanced.c`, causing an arithmetic fault and process termination. Applications accepting untrusted WebP images can consequently suffer denial of service; builds must include the affected WebP codec. This issue is fixed in version 1.0.2."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-369",
              "description": "CWE-369: Divide By Zero",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-28T13:17:29.214Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/HappySeaFox/sail/security/advisories/GHSA-5g8g-g347-84m8",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/HappySeaFox/sail/security/advisories/GHSA-5g8g-g347-84m8"
        },
        {
          "name": "https://github.com/HappySeaFox/sail/commit/495660135a4c62e416a1b357a4381dd30069229d",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/HappySeaFox/sail/commit/495660135a4c62e416a1b357a4381dd30069229d"
        },
        {
          "name": "https://github.com/HappySeaFox/sail/tree/v1.0.2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/HappySeaFox/sail/tree/v1.0.2"
        }
      ],
      "source": {
        "advisory": "GHSA-5g8g-g347-84m8",
        "discovery": "UNKNOWN"
      },
      "title": "SAIL: WebP decoder division by zero through malformed animated canvas metadata"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-59959",
    "datePublished": "2026-10-28T13:17:29.214Z",
    "dateReserved": "2026-07-07T18:49:15.608Z",
    "dateUpdated": "2026-10-28T13:17:29.214Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}