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.

PUBLISHED Reserved 2026-03-30 | Published 2026-04-01 | Updated 2026-04-02 | Assigner GitHub_M

Problem types

CWE-908: Use of Uninitialized Resource

Product status

References

github.com/...penexr/security/advisories/GHSA-vc68-257w-m432 exploit

github.com/...penexr/security/advisories/GHSA-vc68-257w-m432

github.com/...ommit/5f6d0aaa9e43802917af7db90f181e88e083d3b8

github.com/...SoftwareFoundation/openexr/releases/tag/v3.4.8

cve.org (CVE-2026-34543)

nvd.nist.gov (CVE-2026-34543)

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