{"id":"CVE-2026-106117","title":"ImageSharp is a 2D graphics library","summary":"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 wid…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-787"],"vendor":"SixLabors","product":"ImageSharp","affected":["ImageSharp >= 3.0.0, < 4.1.1"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T20:03:40.690","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-106117","references":[{"url":"https://github.com/SixLabors/ImageSharp/commit/e8892ecd8a95dee95c4480fda51cfe0b32f3b846","label":"security-advisories@github.com"},{"url":"https://github.com/SixLabors/ImageSharp/pull/3176","label":"security-advisories@github.com"},{"url":"https://github.com/SixLabors/ImageSharp/releases/tag/v4.1.1","label":"security-advisories@github.com"},{"url":"https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-jj3q-cwqj-842r","label":"security-advisories@github.com"},{"url":"https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-jj3q-cwqj-842r","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-06T18:19:48.989417Z"},"ingestedAt":"2026-10-06T18:11:36.225Z","slug":"CVE-2026-106117","body":"## Overview\n\nImageSharp 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":216690,"id":"CVE-2026-106117","ts":1791314088146,"field":"exploit_available","old":"false","new":"true"}]}