{"id":"CVE-2026-106117","revision":"ff3b95bb2463473caad65f8420cae20f","records":[{"revision":"ff3b95bb2463473caad65f8420cae20f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-106117","aliases":[],"title":"ImageSharp: CCITT fax decompression (T4/Modified Huffman): unbounded WriteBits overflows strip buffer — heap OOB write in SixLabors.ImageSharp","description":"ImageSharp is a 2D graphics library. From 3.0.0 until 4.1.1, decoding a strip TIFF using CCITT Group 3 or Modified Huffman compression can pass attacker-expanded runs to BitWriterUtils.WriteBits without first checking the current row width. T4TiffCompression.WritePixelRun can accumulate oversized makeup-code runs, and ModifiedHuffmanTiffCompression.Decompress validates the width only after writing. The unchecked writes can overflow the strip buffer, corrupt heap memory, and terminate the process. This strip-path vulnerability is distinct from the tiled decompressor-width mismatch. This issue is fixed in version 4.1.1.","state":0,"publishedAt":"2026-10-06T17:53:46.448+00:00","modifiedAt":"2026-10-06T18:20:09.862+00:00","affected":[{"ecosystem":"Vendor product","name":"ImageSharp","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"SixLabors\",\n                    \"product\": \"ImageSharp\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 3.0.0, < 4.1.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-jj3q-cwqj-842r","https://github.com/SixLabors/ImageSharp/pull/3176","https://github.com/SixLabors/ImageSharp/commit/e8892ecd8a95dee95c4480fda51cfe0b32f3b846","https://github.com/SixLabors/ImageSharp/releases/tag/v4.1.1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-106117","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-106117","identifiers":["CVE-2026-106117"]},"retained":false,"historicalAffected":[]}],"coverage":[]}