{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-106118", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-06T15:33:55.333Z", "datePublished": "2026-10-06T17:59:02.778Z", "dateUpdated": "2026-10-06T17:59:02.778Z"}, "containers": {"cna": {"title": "ImageSharp: Tiled fax TIFF: tile buffer sized by TileWidth but fax decompressor writes scanlines of ImageWidth \u2014 heap OOB write", "problemTypes": [{"descriptions": [{"cweId": "CWE-787", "lang": "en", "description": "CWE-787: Out-of-bounds Write", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-v76p-62qx-wwq2", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-v76p-62qx-wwq2"}, {"name": "https://github.com/SixLabors/ImageSharp/pull/3176", "tags": ["x_refsource_MISC"], "url": "https://github.com/SixLabors/ImageSharp/pull/3176"}, {"name": "https://github.com/SixLabors/ImageSharp/commit/9ee7d1dd5b62d8c9f16cc755e76828386bc2191f", "tags": ["x_refsource_MISC"], "url": "https://github.com/SixLabors/ImageSharp/commit/9ee7d1dd5b62d8c9f16cc755e76828386bc2191f"}, {"name": "https://github.com/SixLabors/ImageSharp/releases/tag/v4.1.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/SixLabors/ImageSharp/releases/tag/v4.1.1"}], "affected": [{"vendor": "SixLabors", "product": "ImageSharp", "versions": [{"version": ">= 3.0.0, < 4.1.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-06T17:59:02.778Z"}, "descriptions": [{"lang": "en", "value": "ImageSharp is a 2D graphics library. From 3.0.0 until 4.1.1, tiled TIFF decoding allocates a destination buffer using TileWidth but TiffDecompressorsFactory.Create constructs T4, T6, and Modified Huffman decompressors using the full frame width. TiffDecoderCore.DecodeTilesChunky can therefore direct frame-width fax scanlines into a tile-width buffer when TileWidth is smaller than ImageWidth. The mismatch causes attacker-controlled out-of-bounds writes, heap corruption, and process termination even with legal per-row run codes. This tiled-path vulnerability is distinct from oversized CCITT runs in strip decoding. This issue is fixed in version 4.1.1."}], "source": {"advisory": "GHSA-v76p-62qx-wwq2", "discovery": "UNKNOWN"}}}}

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