Information Exposure Affecting openexr package, versions *
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.
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Test your applications- Snyk IDSNYK-DEBIAN14-OPENEXR-19257781
- published26 Aug 2026
- disclosed25 Aug 2026
Introduced: 25 Aug 2026
NewCVE-2026-62986 (opens in a new tab)How to fix?
There is no fixed version for Debian:14 openexr.
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:14 relevant fixed versions and status.
OpenEXR is the reference implementation and specification for the EXR image file format, widely used in the motion picture industry. In versions 3.3.0 through 3.3.12 and 3.4.0 through 3.4.13, the PyOpenEXR Python bindings return stale heap data when reading a crafted deep scanline EXR that uses layer-prefixed RGB channels. With the default channel coalescing (separate_channels=False), the wrapper groups channels such as left.R, left.G, and left.B into a single RGB sample array, but the lane-offset calculation in PyPart::setDeepSliceData() only recognizes the exact unprefixed names G, B, and A. As a result, prefixed channels like left.G and left.B are decoded into lane 0 while lanes 1 and 2 are left uninitialized and returned to Python. A Python application that reads untrusted deep EXR files through the default OpenEXR.File API and then logs, serializes, previews, or otherwise processes the resulting NumPy sample arrays may expose uninitialized same-process heap contents, in addition to receiving incorrect green and blue channel data. This issue is fixed in versions 3.3.13 and 3.4.14.
References
- https://security-tracker.debian.org/tracker/CVE-2026-62986
- https://github.com/AcademySoftwareFoundation/openexr/commit/36ff0968de08d7ae80792f9f53402f93433207bb
- https://github.com/AcademySoftwareFoundation/openexr/commit/5105809507ba572d8cad12ec9f5a5c9d378354b9
- https://github.com/AcademySoftwareFoundation/openexr/commit/5a534e2228c853034e5cb9d2599ebf82f48f51b0
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-pf59-r2mc-x746