Vulnerability Description
OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions before 3.2.11, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13, exrmultiview can write past a heap allocation when it combines two attacker-supplied, individually valid scanline EXR files whose union dataWindow is not aligned to one view's channel subsampling. The utility allocates sampled channel storage using a truncated union_width / xSampling, then reads the sampled input through a Slice based on the misaligned union window, producing a heap out-of-bounds write. The trigger is normal public-tool processing, such as exrmultiview left A.exr right B.exr out.exr with crafted but valid inputs, so this is not solely an API or caller-precondition issue. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/AcademySoftwareFoundation/openexr/commit/77ee19c021398b1c56f3
- https://github.com/AcademySoftwareFoundation/openexr/commit/c644ac2dfeac82939c81
- https://github.com/AcademySoftwareFoundation/openexr/commit/e2300a3d54a93d20a36a
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-gj
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-gj
FAQ
What is CVE-2026-68515?
CVE-2026-68515 is a vulnerability with a CVSS score of 7.1 (HIGH). OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions before 3.2.11, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.1...
How severe is CVE-2026-68515?
CVE-2026-68515 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-68515?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.