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CVE-2026-115585

CVE-2026-115585 · pypdf: Possible long runtimes for repeated malformed cross-reference entries (Follow-up)

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

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an incomplete remediation for repeated malformed cross-reference entries in GHSA-55h5-xmcq-c37v could still trigger a complete PDF stream reload during each recovery attempt even when a recovery cache was present, causing crafted cross-reference streams to produce long runtimes. This issue is fixed in version 6.21.2.

CVSS 7.1 · High · EPSS 0.4% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • pypdf

    Versions
    • < 6.21.2: Affected

    No fix published

  • pypdf Debian:12

    Versions
    • 3.17.4-1
    • 3.4.1-1
    • 3.4.1-1+deb12u1
    • 4.0.0-1
    • 4.0.0-1~exp1
    • 4.0.1-1
    • 4.0.2-1
    • 4.1.0-1
    • 4.2.0-1
    • 4.3.1-1
    • 5.4.0-1
    • 6.19.0-1
    • 6.21.0-1
    • 6.21.1-1
    • 6.9.0-1
    • 6.9.2-1
    • 6.9.2-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pypdf Debian:13

    Versions
    • 5.4.0-1
    • 6.19.0-1
    • 6.21.0-1
    • 6.21.1-1
    • 6.9.0-1
    • 6.9.2-1
    • 6.9.2-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pypdf Debian:14

    Versions
    • 5.4.0-1
    • 6.19.0-1
    • 6.21.0-1
    • 6.21.1-1
    • 6.9.0-1
    • 6.9.2-1
    • 6.9.2-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pypdf2 Debian:12

    Versions
    • 2.12.1-3
    • 2.12.1-3+deb12u1
    • 2.12.1-4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pypdf PyPI

    Versions
    • 1.0
    • 1.1
    • 1.10
    • 1.11
    • 1.12
    • 1.13
    • 1.2
    • 1.3
    • 1.4
    • 1.5
    • 1.6
    • 1.7
    • 1.8
    • 1.9
    • 3.1.0
    • 3.10.0
    • 3.11.0
    • 3.11.1
    • 3.12.0
    • 3.12.1
    • 3.12.2
    • 3.13.0
    • 3.14.0
    • 3.15.0
    • 3.15.1
    • 3.15.2
    • 3.15.3
    • 3.15.4
    • 3.15.5
    • 3.16.0
    • 3.16.1
    • 3.16.2
    • 3.16.3
    • 3.16.4
    • 3.17.0
    • 3.17.1
    • 3.17.2
    • 3.17.3
    • 3.17.4
    • 3.2.0
    • 3.2.1
    • 3.3.0
    • 3.4.0
    • 3.4.1
    • 3.5.0
    • 3.5.1
    • 3.5.2
    • 3.6.0
    • 3.7.0
    • 3.7.1
    • 3.8.0
    • 3.8.1
    • 3.9.0
    • 3.9.1
    • 4.0.0
    • 4.0.1
    • 4.0.2
    • 4.1.0
    • 4.2.0
    • 4.3.0
    • 4.3.1
    • 5.0.0
    • 5.0.1
    • 5.1.0
    • 5.2.0
    • 5.3.0
    • 5.3.1
    • 5.4.0
    • 5.5.0
    • 5.6.0
    • 5.6.1
    • 5.7.0
    • 5.8.0
    • 5.9.0
    • 6.0.0
    • 6.1.0
    • 6.1.1
    • 6.1.2
    • 6.1.3
    • 6.10.0
    • 6.10.1
    • 6.10.2
    • 6.11.0
    • 6.12.0
    • 6.12.1
    • 6.12.2
    • 6.13.0
    • 6.13.1
    • 6.13.2
    • 6.13.3
    • 6.14.0
    • 6.14.1
    • 6.14.2
    • 6.15.0
    • 6.16.0
    • 6.16.1
    • 6.16.2
    • 6.17.0
    • 6.18.0
    • 6.18.1
    • 6.19.0
    • 6.2.0
    • 6.20.0
    • 6.20.1
    • 6.21.0
    • 6.21.1
    • 6.3.0
    • 6.4.0
    • 6.4.1
    • 6.4.2
    • 6.5.0
    • 6.6.0
    • 6.6.1
    • 6.6.2
    • 6.7.0
    • 6.7.1
    • 6.7.2
    • 6.7.3
    • 6.7.4
    • 6.7.5
    • 6.8.0
    • 6.9.0
    • 6.9.1
    • 6.9.2
    Affected ranges
    • ECOSYSTEM: < 6.21.2

    Update to 6.21.2

Original sources

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