CVE-2026-50291
Medium · CVSS 5.5Published 2026-09-17
CVSS
5.5
Medium
EPSS
—
exploit probability
Active Exploit
No
not yet listed
What is CVE-2026-50291?
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to versions 3.0.16.0 and 3.1.11.0, processing a crafted BMP file through oiiotool or an application linked to OpenImageIO can reach BMP palette handling in src/bmp.imageio/bmpinput.cpp with an empty color table. BmpInput::read_native_scanline then performs an invalid palette read while decoding an RLE-compressed scanline, causing a process crash and denial of service. This issue is fixed in versions 3.0.16.0 and 3.1.11.0.
CVSS Score Explained
CVSS 5.5 is Medium severity. Exploitation usually requires some specific conditions (local access, user interaction, or a particular config). Still worth patching in your next maintenance window.
EPSS Exploitation Probability
No EPSS score yet — model needs more data on this CVE.
References & Patches
- ›https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/91500ed58ce927b7e710c6bbc3b7f795bb0791b5
- ›https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/be984856e315e0a82cd866745b544c8c4cb8bd45
- ›https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/ee3370d004d5895554239b4302c59eedb721f086
- ›https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5030
- PATCHhttps://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.0.16.0
- PATCHhttps://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.1.11.0
- ›https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-q3c7-3225-66h7
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