Medium severity · published Sep 17, 2026
CVE-2026-50291
OpenImageIO: Segmentation Fault in BmpInput::read_native_scanline (bmpinput.cpp:399)
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 10% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
OpenImageIO · AcademySoftwareFoundation
< 3.0.16.0; >= 3.1.0.0, < 3.1.11.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-50291
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-50291
Patch
https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/91500ed58ce927b7e710c6bbc3b7f795bb0791b5
Patch
https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/be984856e315e0a82cd866745b544c8c4cb8bd45
Patch
https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/ee3370d004d5895554239b4302c59eedb721f086
Issue Tracking
https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5030
Release Notes
https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.0.16.0
Release Notes
https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.1.11.0
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