{"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"}}}}

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