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CVE-2026-26065

CVE-2026-26065 · calibre: Path Traversal can Lead to Arbitrary File Write and Potential Code Execution

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

calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Versions 9.2.1 and below are vulnerable to Path Traversal through PDB readers (both 132-byte and 202-byte header variants) that allow arbitrary file writes with arbitrary extension and arbitrary content anywhere the user has write permissions. Files are written in 'wb' mode, silently overwriting existing files. This can lead to potential code execution and Denial of Service through file corruption. This issue has been fixed in version 9.3.0.

CVSS 9.3 · Critical · EPSS 0.6% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • calibre

    Versions
    • < 9.3.0: Affected

    No fix published

  • calibre Debian:12

    Versions
    • 6.13.0+repack-2
    • 6.13.0+repack-2+deb12u1
    • 6.13.0+repack-2+deb12u2
    • 6.13.0+repack-2+deb12u3
    • 6.13.0+repack-2+deb12u4
    • 6.13.0+repack-2+deb12u5
    Affected ranges
    • ECOSYSTEM: < 6.13.0+repack-2+deb12u6

    Update to 6.13.0+repack-2+deb12u6

  • calibre Debian:13

    Versions
    • 8.5.0+ds-1
    • 8.5.0+ds-1+deb13u1
    Affected ranges
    • ECOSYSTEM: < 8.5.0+ds-1+deb13u2

    Update to 8.5.0+ds-1+deb13u2

  • calibre Debian:14

    Versions
    • 8.10.0+ds-1
    • 8.10.0+ds-2
    • 8.10.0+ds-3
    • 8.11.0+ds+~0.10.5-1
    • 8.11.1+ds+~0.10.5-1
    • 8.11.1+ds+~0.10.5-2
    • 8.11.1+ds+~0.10.5-3
    • 8.12.0+ds+~0.10.5-1
    • 8.13.0+ds+~0.10.5-1
    • 8.13.0+ds+~0.10.5-2
    • 8.13.0+ds+~0.10.5-3
    • 8.14.0+ds+~0.10.5-1
    • 8.14.0+ds+~0.10.5-1~bpo13+1
    • 8.15.0+ds+~0.10.5-1
    • 8.15.0+ds+~0.10.5-1~bpo13+1
    • 8.15.0+ds+~0.10.5-2
    • 8.16.0+ds+~0.10.5-1
    • 8.16.0+ds+~0.10.5-2
    • 8.16.1+ds+~0.10.5-1
    • 8.16.2+ds+~0.10.5-1
    • 8.16.2+ds+~0.10.5-2
    • 8.16.2+ds+~0.10.5-3
    • 8.16.2+ds+~0.10.5-3~bpo13+1
    • 8.5.0+ds-1
    • 8.6.0+ds-1
    • 8.7.0+ds-1
    • 8.8.0+ds-1
    • 8.8.0+ds-2
    • 8.8.0+ds-2+gcc15
    • 8.8.0+ds-3
    • 8.9.0+ds-1
    • 8.9.0+ds-2
    • 8.9.0+ds-3
    • 8.9.0+ds-4
    • 9.0.0+ds+~0.10.5-1
    • 9.1.0+ds+~0.10.5-1
    • 9.2.0+ds+~0.10.5-1
    • 9.2.1+ds+~0.10.5-1
    • 9.2.1+ds+~0.10.5-2
    Affected ranges
    • ECOSYSTEM: < 9.3.0+ds+~0.10.5-1

    Update to 9.3.0+ds+~0.10.5-1

  • calibre Ubuntu:16.04:LTS

    Versions
    • 2.33.0+dfsg-1build1
    • 2.38.0+dfsg-1
    • 2.45.0+dfsg-1
    • 2.45.0+dfsg-1build1
    • 2.48.0+dfsg-1
    • 2.48.0+dfsg-1build1
    • 2.54.0+dfsg-1
    • 2.55.0+dfsg-1
    • 2.55.0+dfsg-1ubuntu0.2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • calibre Ubuntu:18.04:LTS

    Versions
    • 3.7.0+dfsg-2
    • 3.7.0+dfsg-2build1
    • 3.12.0+dfsg-1
    • 3.13.0+dfsg-1
    • 3.14.0+dfsg-1
    • 3.15.0.1+dfsg-1
    • 3.16.0+dfsg-1
    • 3.16.0+dfsg-1build1
    • 3.17.0+dfsg-1
    • 3.17.0+dfsg-2
    • 3.18.0+dfsg-1build1
    • 3.19.0+dfsg-1
    • 3.20.0+dfsg-1
    • 3.21.0+dfsg-1
    • 3.21.0+dfsg-1build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • calibre Ubuntu:20.04:LTS

    Versions
    • 3.46.0+dfsg-1
    • 4.2.0+dfsg-2
    • 4.3.0+dfsg-1
    • 4.3.0+dfsg-2
    • 4.4.0+dfsg-1
    • 4.5.0+dfsg-1
    • 4.5.0+dfsg-2
    • 4.5.0+dfsg-3
    • 4.6.0+dfsg-1
    • 4.7.0+dfsg-1
    • 4.99.3+dfsg-2
    • 4.99.4+dfsg-1
    • 4.99.4+dfsg-1build1
    • 4.99.4+dfsg+really4.10.0+py3-2
    • 4.99.4+dfsg+really4.11.2-1
    • 4.99.4+dfsg+really4.11.2-1build1
    • 4.99.4+dfsg+really4.12.0-1
    • 4.99.4+dfsg+really4.12.0-1build1
    • 4.99.4+dfsg+really4.12.0-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • calibre Ubuntu:22.04:LTS

    Versions
    • 5.25.0+dfsg-2
    • 5.33.2+dfsg-1
    • 5.34.0+dfsg-1
    • 5.35.0+dfsg-1ubuntu2
    • 5.37.0+dfsg-1
    • 5.37.0+dfsg-1build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • calibre Ubuntu:24.04:LTS

    Versions
    • 6.24.0+ds-1
    • 6.29.0+ds-1
    • 7.0.0+ds-1
    • 7.1.0+ds-1
    • 7.1.0+ds-2
    • 7.2.0+ds-1
    • 7.2.0+ds-1build1
    • 7.3.0+ds-1
    • 7.4.0+ds-1
    • 7.5.1+ds-1
    • 7.5.1+ds-2
    • 7.5.1+ds-3
    • 7.6.0+ds-1
    • 7.6.0+ds-1build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • calibre Ubuntu:25.10

    Versions
    • 7.26.0+ds-4build1
    • 8.3.0+ds-1
    • 8.4.0+ds-1
    • 8.5.0+ds-1
    • 8.6.0+ds-1
    • 8.7.0+ds-1
    • 8.8.0+ds-2
    • 8.8.0+ds-3
    • 8.8.0+ds-3build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • calibre Ubuntu:26.10

    Versions
    • 9.2.1+ds+~0.10.5-2build1
    • 9.9.0+ds+~0.10.6-1
    • 9.11.0+ds+~0.10.6-1
    • 9.11.0+ds+~0.10.6-2
    • 9.13.0+ds+~0.10.6-1
    • 9.14.0+ds+~0.10.6-2build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • calibre Ubuntu:26.04:LTS

    Versions
    • 8.8.0+ds-3build1
    • 8.13.0+ds+~0.10.5-3
    • 8.14.0+ds+~0.10.5-1
    • 8.15.0+ds+~0.10.5-1
    • 8.16.0+ds+~0.10.5-2
    • 8.16.2+ds+~0.10.5-1
    • 8.16.2+ds+~0.10.5-2
    • 8.16.2+ds+~0.10.5-3
    • 9.2.1+ds+~0.10.5-2build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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