{"id":"CVE-2026-106115","sourceIdentifier":"security-advisories@github.com","published":"2026-10-06T18:16:53.250","lastModified":"2026-10-24T01:27:41.513","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"ImageSharp is a 2D graphics library. From 2.1.0 until 4.1.2, the TIFF CCITT Group 4 encoder allocates Width times rowsPerStrip bytes even though T6BitCompressor.CompressStrip can emit encoded row data and two 12-bit end-of-facsimile-block codes beyond that capacity. TiffCcittCompressor.WriteCode performs unchecked writes, and a decode-and-re-encode flow can inherit TiffCompression.CcittGroup4Fax and one-bit metadata from attacker-supplied input. The resulting out-of-bounds writes can corrupt memory and terminate the process. This issue is fixed in version 4.1.2."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"SixLabors","product":"ImageSharp","versions":[{"version":">= 2.1.0, < 4.1.2","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":"2026-10-09T01:20:30.658521Z","id":"CVE-2026-106115","options":[{"exploitation":"poc"},{"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"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:sixlabors:imagesharp:*:*:*:*:*:*:*:*","versionStartIncluding":"2.1.0","versionEndExcluding":"3.2.0","matchCriteriaId":"314C452A-FC62-4DC9-A1AC-E54A76061919"},{"vulnerable":true,"criteria":"cpe:2.3:a:sixlabors:imagesharp:*:*:*:*:*:*:*:*","versionStartIncluding":"4.0.0","versionEndExcluding":"4.1.2","matchCriteriaId":"F920B012-BBFB-40DB-B201-165EBA6645D7"}]}]}],"references":[{"url":"https://github.com/SixLabors/ImageSharp/commit/a9498c6db3642ef92c712ebc81e706914ac16a95","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/SixLabors/ImageSharp/pull/3187","source":"security-advisories@github.com","tags":["Issue Tracking","Patch"]},{"url":"https://github.com/SixLabors/ImageSharp/releases/tag/v4.1.2","source":"security-advisories@github.com","tags":["Release Notes"]},{"url":"https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-jjfr-hcj7-qf5w","source":"security-advisories@github.com","tags":["Exploit","Vendor Advisory"]},{"url":"https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-jjfr-hcj7-qf5w","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":["Exploit","Vendor Advisory"]}]}