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CVE-2026-34543

CVE-2026-34543 · OpenEXR: Heap information disclosure in PXR24 decompression via unchecked decompressed size (undo_pxr24_impl)

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 8.7 · High · EPSS 0.5% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • openexr

    Versions
    • >= 3.4.0, < 3.4.8: Affected

    No fix published

  • openexr Debian:12

    Versions
    • 3.1.13-1
    • 3.1.13-2
    • 3.1.5-5
    • 3.1.5-5.1
    • 3.1.5-5.1+hurd.1
    • 3.4.14-0.1
    • 3.4.15+ds-1
    • 3.4.16+ds-1
    • 3.4.6+ds-1
    • 3.4.6+ds-2
    • 3.4.6+ds-3
    • 3.4.6+ds-4
    • 3.5.2+ds-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openexr Debian:13

    Versions
    • 3.1.13-2
    • 3.4.14-0.1
    • 3.4.15+ds-1
    • 3.4.16+ds-1
    • 3.4.6+ds-1
    • 3.4.6+ds-2
    • 3.4.6+ds-3
    • 3.4.6+ds-4
    • 3.5.2+ds-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openexr Debian:14

    Versions
    • 3.1.13-2
    • 3.4.6+ds-1
    • 3.4.6+ds-2
    • 3.4.6+ds-3
    • 3.4.6+ds-4
    Affected ranges
    • ECOSYSTEM: < 3.4.14-0.1

    Update to 3.4.14-0.1

  • openexr PyPI

    Versions
    • 3.4.0
    • 3.4.1
    • 3.4.2
    • 3.4.3
    • 3.4.4
    • 3.4.5
    • 3.4.6
    • 3.4.7
    Affected ranges
    • ECOSYSTEM: ≥ 3.4.0, < 3.4.8

    Update to 3.4.8

  • openexr PyPI

    Versions
    • 3.3.0
    • 3.3.1
    • 3.3.2
    • 3.3.3
    • 3.3.4
    • 3.3.5
    • 3.3.6
    • 3.3.7
    • 3.3.8
    Affected ranges
    • ECOSYSTEM: ≥ 3.3.0, ≤ 3.3.8

    No fix published

  • openexr PyPI

    Versions
    • 3.2.3
    • 3.2.4
    • 3.2.5
    • 3.2.6
    Affected ranges
    • ECOSYSTEM: ≥ 3.2.0, ≤ 3.2.6

    No fix published

  • openexr PyPI

    Versions
    • 3.2.10
    • 3.2.3
    • 3.2.4
    • 3.2.5
    • 3.2.6
    • 3.2.7
    • 3.2.8
    • 3.2.9
    • 3.3.0
    • 3.3.1
    • 3.3.10
    • 3.3.11
    • 3.3.12
    • 3.3.2
    • 3.3.3
    • 3.3.4
    • 3.3.5
    • 3.3.6
    • 3.3.7
    • 3.3.8
    • 3.3.9
    • 3.4.0
    • 3.4.1
    • 3.4.2
    • 3.4.3
    • 3.4.4
    • 3.4.5
    • 3.4.6
    • 3.4.7
    Affected ranges
    • ECOSYSTEM: ≥ 3.2.0, < 3.4.8

    Update to 3.4.8

  • openexr Ubuntu:26.10

    Versions
    • 3.1.13-2build1
    • 3.4.6+ds-4ubuntu3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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