Integer Overflow or Wraparound Affecting openexr package, versions <3.4.9-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.01% (4th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-OPENEXR-15967910
  • published10 Apr 2026
  • disclosed1 Apr 2026

Introduced: 1 Apr 2026

NewCVE-2026-34544  (opens in a new tab)
CWE-190  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Chainguard openexr to version 3.4.9-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openexr package and not the openexr package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

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, a crafted B44 or B44A EXR file can cause an out-of-bounds write in any application that decodes it via exr_decoding_run(). Consequences range from immediate crash (most likely) to corruption of adjacent heap allocations (layout-dependent). This issue has been patched in version 3.4.8.

CVSS Base Scores

version 3.1