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CVE-2026-50291

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

MEDIUM
5.5
CVSS Score
Published: September 17, 2026 at 09:33 PM UTC
Updated: September 29, 2026 at 06:57 PM UTC
2 products affected across 2 vendorsOpenImageIOOpenImageIO

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

OpenImageIO· Openimageio
95%
v < 3.0.16.03.1.0.0 ≤ v < 3.1.11.0
Affected range stops below 3.0.16.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.1.11.0, so it looks safe — our inference, not a vendor statement
OpenImageIO· Academysoftwarefoundation
60%
v < 3.0.16.0v < 3.1.11.0
Affected range stops below 3.0.16.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.1.11.0, so it looks safe — our inference, not a vendor statement

References (7)

x_refsource_CONFIRMExploitVendor Advisory
Source: cverecord
https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-q3c7-3225-66h7
x_refsource_MISCIssue TrackingPatch
Source: cverecord
https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5030
x_refsource_MISCPatch
Source: cverecord
https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/91500ed58ce927b7e710c6bbc3b7f795bb0791b5
x_refsource_MISCPatch
Source: cverecord
https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/be984856e315e0a82cd866745b544c8c4cb8bd45
x_refsource_MISCPatch
Source: cverecord
https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/ee3370d004d5895554239b4302c59eedb721f086
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.0.16.0
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.1.11.0

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMGitHub_M
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-125

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