Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-50291

CVE-2026-50291MEDIUM

AcademySoftwareFoundation OpenImageIO — OpenImageIO: Segmentation Fault in BmpInput::read_native_scanline (bmpinput.cpp:399)

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   N   R  U  N  N  H    5.5   .0020    8.7     —

AFFECTED
  Product      Versions      Fixed
  OpenImageIO  < 3.0.16.0 –  —

TIMELINE
  Jun 4   Reserved by GitHub_M
  Sep 17  Published (CNA: GitHub_M)
  Sep 29  EXPLOIT PUBLISHED — CVE-2026-50291 (AcademySoftwareFoundation OpenImageIO). Public exploit reference added.

CWE-125 · CNA: GitHub_M · CVSS v3.1 · 7 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
June 4, 2026	Reserved	Reserved by GitHub_M
September 17, 2026	Published	Published (CNA: GitHub_M)
September 29, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-50291 (AcademySoftwareFoundation OpenImageIO). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
AcademySoftwareFoundation	OpenImageIO	—	< 3.0.16.0	—

Weaknesses

CWE-125

References (7)

https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/91500ed58ce927b7e710c6bbc3b7f795bb0791b5 [Patch]
https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/be984856e315e0a82cd866745b544c8c4cb8bd45 [Patch]
https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/ee3370d004d5895554239b4302c59eedb721f086 [Patch]
https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5030 [Issue Tracking, Patch]
https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.0.16.0 [Release Notes]
https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.1.11.0 [Release Notes]
https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-q3c7-3225-66h7 [Exploit, Vendor Advisory]

Authoritative record: CVE-2026-50291 at cve.org

Vendors: academysoftwarefoundation

Weaknesses: CWE-125

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-50291 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.