High severity7.5NVD Advisory· Published Apr 1, 2026· Updated Apr 7, 2026
CVE-2026-34543
CVE-2026-34543
Description
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
openexrPyPI | >= 3.4.0, < 3.4.8 | 3.4.8 |
openexrPyPI | >= 3.3.0, <= 3.3.8 | — |
openexrPyPI | >= 3.2.0, <= 3.2.6 | — |
Affected products
19- osv-coords18 versionspkg:apk/chainguard/openexrpkg:apk/chainguard/openexr-devpkg:apk/chainguard/openexr-docpkg:apk/chainguard/openexr-libiexpkg:apk/chainguard/openexr-libilmthreadpkg:apk/chainguard/openexr-libopenexrpkg:apk/chainguard/openexr-libopenexrcorepkg:apk/chainguard/openexr-libopenexrutilpkg:apk/wolfi/openexrpkg:apk/wolfi/openexr-devpkg:apk/wolfi/openexr-docpkg:apk/wolfi/openexr-libiexpkg:apk/wolfi/openexr-libilmthreadpkg:apk/wolfi/openexr-libopenexrpkg:apk/wolfi/openexr-libopenexrcorepkg:apk/wolfi/openexr-libopenexrutilpkg:pypi/openexrpkg:rpm/opensuse/openexr&distro=openSUSE%20Tumbleweed
< 3.4.9-r0+ 17 more
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: < 3.4.9-r0
- (no CPE)range: >= 3.4.0, < 3.4.8
- (no CPE)range: < 3.4.9-1.1
Patches
Vulnerability mechanics
References
5- github.com/AcademySoftwareFoundation/openexr/commit/5f6d0aaa9e43802917af7db90f181e88e083d3b8nvdPatchWEB
- github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-vc68-257w-m432nvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-vc68-257w-m432ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-34543ghsaADVISORY
- github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.8nvdProductRelease NotesWEB
News mentions
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