Use After Free Affecting openexr package, versions <3.4.14-0.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-OPENEXR-19270085
- published26 Aug 2026
- disclosed25 Aug 2026
Introduced: 25 Aug 2026
NewCVE-2026-59184 (opens in a new tab)How to fix?
Upgrade Debian:unstable openexr to version 3.4.14-0.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openexr package and not the openexr package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. Versions before 3.2.11, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13 allow a crafted EXR with a nonzero dataWindow.min to make TypedFlatImageChannel::row() return an invalid heap pointer, causing out-of-bounds or use-after-free writes. This occurs when an application writes rows through FlatHalfChannel::row(). Affected consumers are tools, converters, render pipeline components, or image-processing services that accept untrusted EXR files and use FlatHalfChannel::row() on loaded images. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14.
References
- https://security-tracker.debian.org/tracker/CVE-2026-59184
- https://github.com/AcademySoftwareFoundation/openexr/commit/37f03b6ed90f3dd9910f31de3a40f25f2bc2aca1
- https://github.com/AcademySoftwareFoundation/openexr/commit/55b7958ecb5ac32c427ff39c1e063f6f7bbee77c
- https://github.com/AcademySoftwareFoundation/openexr/commit/aef02224ba282a802de65d16c49c1cdb82089dec
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-pqp9-558c-453q