{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-59959",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-07-07T18:49:15.608Z",
        "datePublished": "2026-10-28T13:17:29.214Z",
        "dateUpdated": "2026-10-28T13:17:29.214Z"
    },
    "containers": {
        "cna": {
            "title": "SAIL: WebP decoder division by zero through malformed animated canvas metadata",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-369",
                            "lang": "en",
                            "description": "CWE-369: Divide By Zero",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "LOCAL",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "PASSIVE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "LOW",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 4.8,
                        "baseSeverity": "MEDIUM",
                        "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"
                    }
                }
            ],
            "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"
                }
            ],
            "affected": [
                {
                    "vendor": "HappySeaFox",
                    "product": "sail",
                    "versions": [
                        {
                            "version": "< 1.0.2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-28T13:17:29.214Z"
            },
            "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->width`, 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."
                }
            ],
            "source": {
                "advisory": "GHSA-5g8g-g347-84m8",
                "discovery": "UNKNOWN"
            }
        }
    }
}