Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 8.9%
CVSS Severity
CVSS v3 Score 5.5
References
- 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
- https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.0.16.0
- https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.1.11.0
- https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-q3c7-3225-66h7
- https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-q3c7-3225-66h7
Products affected by CVE-2026-50291
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cpe:2.3:a:openimageio:openimageio:3.1.0.0
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cpe:2.3:a:openimageio:openimageio:3.1.10.0
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cpe:2.3:a:openimageio:openimageio:3.1.4.0
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cpe:2.3:a:openimageio:openimageio:3.1.5.0
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cpe:2.3:a:openimageio:openimageio:3.1.6.0
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cpe:2.3:a:openimageio:openimageio:3.1.6.1
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cpe:2.3:a:openimageio:openimageio:3.1.6.2
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cpe:2.3:a:openimageio:openimageio:3.1.7.0
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cpe:2.3:a:openimageio:openimageio:3.1.8.0
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cpe:2.3:a:openimageio:openimageio:3.1.9.0