CVE catalog

CVE-2026-73248

calibre is an e-book manager. Prior to 9.12.0, calibre…

[CVE catalog]

calibre is an e-book manager. Prior to 9.12.0, calibre processes attacker-controlled composite_template metadata from a malicious EPUB, OPF, PDF, or similar file through program: and a nested template() call whose formatter does not inherit allow_python_templates=False, allowing a nested python: template to reach compile_python_template and execute arbitrary Python code when the file is opened or imported. This issue is fixed in version 9.12.0.

Severity
High · CVSS 8.5CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
Source
[NVD] · [CVE record]
EPSS
0.20% · Oct 27, 2026

Projects and upstream resources

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Version impact has not been established. The original provider fields are retained below.

Provider details and historical evidence
Original provider fields
{
  "package_releases": [
    {
      "name": "calibre",
      "status": "fixed",
      "release": "sid",
      "version": "9.17.0+ds+~1.1.2-1"
    },
    {
      "name": "calibre",
      "status": "fixed",
      "release": "forky",
      "version": "9.17.0+ds+~1.1.2-1"
    },
    {
      "name": "calibre",
      "status": "vulnerable",
      "release": "trixie",
      "version": "8.5.0+ds-1+deb13u3"
    },
    {
      "name": "calibre",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "6.13.0+repack-2+deb12u9"
    },
    {
      "name": "calibre",
      "status": "vulnerable",
      "release": "bookworm-security",
      "version": "6.13.0+repack-2+deb12u10"
    }
  ],
  "fixed_versions": [
    {
      "bug": null,
      "name": "calibre",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "9.12.0+ds+~0.10.6-1"
    },
    {
      "bug": null,
      "name": "calibre",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": "9.12.0+ds+~0.10.6-1"
    },
    {
      "bug": null,
      "name": "calibre",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": ""
    },
    {
      "bug": null,
      "name": "calibre",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": ""
    }
  ],
  "distribution_packages": []
}

Publisher notes

[trixie] calibre: Minor issue [bookworm] calibre: Minor issue

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

  • [calibre]Unknown
    Details (4)

    • 6.13.0+repack-2+deb12u9 · all · bookworm

      Affected

      nvd · calibre · debian · bookworm; nvd · calibre · debian · 12

    • 6.13.0+repack-2+deb12u9 · all · bookworm

      Affected

      nvd · calibre · debian · bookworm; nvd · calibre · debian · 12

    • 6.13.0+repack-2+deb12u10 · all · bookworm-security

      Affected

      nvd · calibre · debian · bookworm; nvd · calibre · debian · 12

    • 6.13.0+repack-2+deb12u10 · all · bookworm-security

      Affected

      nvd · calibre · debian · bookworm; nvd · calibre · debian · 12

  • [calibre-bin]Unknown

    Source package: [calibre]

    Details (4)

    • 6.13.0+repack-2+deb12u9 · amd64 · bookworm

      Affected

      nvd · calibre · debian · bookworm; nvd · calibre · debian · 12

    • 6.13.0+repack-2+deb12u9 · arm64 · bookworm

      Affected

      nvd · calibre · debian · bookworm; nvd · calibre · debian · 12

    • 6.13.0+repack-2+deb12u10 · amd64 · bookworm-security

      Affected

      nvd · calibre · debian · bookworm; nvd · calibre · debian · 12

    • 6.13.0+repack-2+deb12u10 · arm64 · bookworm-security

      Affected

      nvd · calibre · debian · bookworm; nvd · calibre · debian · 12

[Debian 13 (Trixie)]

  • [calibre]Unknown
    Details (4)

    • 8.5.0+ds-1+deb13u3 · all · trixie

      Affected

      nvd · calibre · debian · 13

    • 8.5.0+ds-1+deb13u3 · all · trixie

      Affected

      nvd · calibre · debian · 13

    • 8.16.2+ds+~0.10.5-3~bpo13+1 · all · trixie-backports

      Affected

      nvd · calibre · debian · 13

    • 8.16.2+ds+~0.10.5-3~bpo13+1 · all · trixie-backports

      Affected

      nvd · calibre · debian · 13

  • [calibre-bin]Unknown

    Source package: [calibre]

    Details (4)

    • 8.5.0+ds-1+deb13u3 · amd64 · trixie

      Affected

      nvd · calibre · debian · 13

    • 8.5.0+ds-1+deb13u3 · arm64 · trixie

      Affected

      nvd · calibre · debian · 13

    • 8.16.2+ds+~0.10.5-3~bpo13+1 · amd64 · trixie-backports

      Affected

      nvd · calibre · debian · 13

    • 8.16.2+ds+~0.10.5-3~bpo13+1 · arm64 · trixie-backports

      Affected

      nvd · calibre · debian · 13

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]