Out-of-bounds Read in Academysoftwarefoundation Openimageio

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.

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-50291?
CVE-2026-50291 is a medium-severity vulnerability in Academysoftwarefoundation Openimageio, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2026-09-17.
How severe is CVE-2026-50291?
Medium severity. CVSS v3 base score is 5.5 out of 10.