CVE-2026-34543
OpenEXR: Heap information disclosure in PXR24 decompression via unchecked decompressed size (undo_pxr24_impl)
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
12th
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.8, sensitive information from heap memory may be leaked through the decoded pixel data (information disclosure). This occurs under default settings; simply reading a malicious EXR file is sufficient to trigger the issue, without any user interaction. This issue has been patched in version 3.4.8.
| CWE | CWE-908 |
| Vendor | academysoftwarefoundation |
| Product | openexr |
| Published | Apr 1, 2026 |
| Last Updated | Apr 2, 2026 |
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Affected Versions
AcademySoftwareFoundation / openexr
>= 3.4.0, < 3.4.8
References
github.com: https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-vc68-257w-m432 github.com: https://github.com/AcademySoftwareFoundation/openexr/commit/5f6d0aaa9e43802917af7db90f181e88e083d3b8 github.com: https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.8