---
id: CVE-2026-50291
title: >-
  OpenImageIO is a toolset for reading, writing, and manipulating image files of
  any image file format relevant to VFX / animation
summary: >-
  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
  l…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cwe:
  - CWE-125
vendor: AcademySoftwareFoundation
product: OpenImageIO
affected:
  - OpenImageIO < 3.0.16.0
  - 'OpenImageIO >= 3.1.0.0, < 3.1.11.0'
published: '2026-09-17'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T21:17:15.447'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-50291'
references:
  - url: >-
      https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/91500ed58ce927b7e710c6bbc3b7f795bb0791b5
    label: security-advisories@github.com
  - url: >-
      https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/be984856e315e0a82cd866745b544c8c4cb8bd45
    label: security-advisories@github.com
  - url: >-
      https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/ee3370d004d5895554239b4302c59eedb721f086
    label: security-advisories@github.com
  - url: 'https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5030'
    label: security-advisories@github.com
  - url: >-
      https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.0.16.0
    label: security-advisories@github.com
  - url: >-
      https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.1.11.0
    label: security-advisories@github.com
  - url: >-
      https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-q3c7-3225-66h7
    label: security-advisories@github.com
  - url: >-
      https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-q3c7-3225-66h7
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-24T20:48:01.946447Z'
epss: 0.00172
epssPercentile: 0.05785
ingestedAt: '2026-09-17T22:30:21.397Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.