{"id":"CVE-2026-106118","sourceIdentifier":"security-advisories@github.com","published":"2026-10-06T19:17:42.640","lastModified":"2026-10-06T20:17:17.703","vulnStatus":"Awaiting Analysis","cveTags":[],"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."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"SixLabors","product":"ImageSharp","versions":[{"version":">= 3.0.0, < 4.1.1","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-10-06T19:27:52.241408Z","id":"CVE-2026-106118","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-787"}]}],"references":[{"url":"https://github.com/SixLabors/ImageSharp/commit/9ee7d1dd5b62d8c9f16cc755e76828386bc2191f","source":"security-advisories@github.com"},{"url":"https://github.com/SixLabors/ImageSharp/pull/3176","source":"security-advisories@github.com"},{"url":"https://github.com/SixLabors/ImageSharp/releases/tag/v4.1.1","source":"security-advisories@github.com"},{"url":"https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-v76p-62qx-wwq2","source":"security-advisories@github.com"}]}