{"id":"CVE-2026-106116","summary":"ImageSharp: BigTIFF IFD count can keep a decoder thread in a non-progressing loop","details":"ImageSharp is a 2D graphics library. From 2.0.0 until 4.1.2, ExifReader.ReadValues64 trusts the 64-bit BigTIFF IFD entry count and iterates once per declared entry. When fewer than 20 bytes remain, ExifReader.ReadValue64 returns without advancing the stream or terminating the outer loop, so a small malformed BigTIFF can keep one decoder thread executing for an attacker-controlled duration. This report does not claim worker-pool exhaustion. This issue is fixed in version 4.1.2.","aliases":["GHSA-wmxv-xphr-5c9g"],"modified":"2026-10-08T02:50:33.229653227Z","published":"2026-10-06T17:51:36.366Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-835"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/106xxx/CVE-2026-106116.json"},"references":[{"type":"WEB","url":"https://github.com/SixLabors/ImageSharp/releases/tag/v4.1.2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/106xxx/CVE-2026-106116.json"},{"type":"ADVISORY","url":"https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-wmxv-xphr-5c9g"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106116"},{"type":"FIX","url":"https://github.com/SixLabors/ImageSharp/commit/92b12d72550ebb6be5b1e22e559c361fd863a6ec"},{"type":"FIX","url":"https://github.com/SixLabors/ImageSharp/pull/3187"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/sixlabors/imagesharp","events":[{"introduced":"5d6f3893baad0defd9d1a45b31275fedcd6a63e9"},{"fixed":"92b12d72550ebb6be5b1e22e559c361fd863a6ec"},{"fixed":"dee414097e4be7bb35ef0209cf96bd0b61a7133a"}],"database_specific":{"extracted_events":[{"introduced":"2.0.0"},{"fixed":"4.1.2"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v4.1.1","v4.1.0","v4.0.0","v3.1.0","v3.0.1","v3.0.0","v2.1.1","v2.1.0","v2.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-106116.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}]}