Vulnerability · Published Sep 18, 2026 · Assigned by GitHub_M
CVE-2026-63635OpenImageIO: PSD RawColor invalid color mode causes global out-of-bounds read and allocation DoS
Medium 5.5
In plain English
A medium-severity out-of-bounds read in OpenImageIO from AcademySoftwareFoundation. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A crafted psd with an invalid color_mode bypasses normal validation when oiio:rawcolor or psd:rawdata is enabled. psdinput::setup() then uses the attacker-controlled value to index fixed color-mode tables, causing a global out-of-bounds read and potentially a bogus allocation, resulting in denial of service. The affected implementation is identified by src/psd.imageio/psdinput.cpp, PSDInput::validate_header(), PSDInput::setup(), oiio:RawColor, psd:RawData, color_mode, and mode_channel_count, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | openimageio | no fix listed | DEBIAN-CVE-2026-63635 |
| Debian:13 | openimageio | no fix listed | DEBIAN-CVE-2026-63635 |
| Debian:14 | openimageio | 3.1.18.0+dfsg-2 | DEBIAN-CVE-2026-63635 |
| Ubuntu:22.04:LTS | openimageio | no fix listed | UBUNTU-CVE-2026-63635 |
| Ubuntu:26.10 | openimageio | no fix listed | UBUNTU-CVE-2026-63635 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| AcademySoftwareFoundation | OpenImageIO | < 3.0.21.0>= 3.1.0.0, < 3.1.16.0>= 3.2.0.0-dev, < 3.2.0.3-beta1 |
Weakness: CWE-125, CWE-129 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
References
- https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-3c8w-9xvm-r6gf x_refsource_CONFIRM
- https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5282 x_refsource_MISC
- https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/50481b0f90932a4675f65f3cc26407139cb9e20e x_refsource_MISC
- https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.0.21.0 x_refsource_MISC
- https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.1.16.0 x_refsource_MISC
- https://github.com/user-attachments/files/29539076/poc.zip exploit