CVE catalog

CVE-2026-25635

calibre: CVE-2026-25635

Severity: High · CVSS 8.6CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Published: Feb 6, 2026, 8:10:29 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.51% · Oct 25, 2026

calibre is an e-book manager. Prior to 9.2.0, Calibre's CHM reader contains a path traversal vulnerability that allows arbitrary file writes anywhere the user has write permissions. On Windows (haven't tested on other OS's), this can lead to Remote Code Execution by writing a payload to the Startup folder, which executes on next login. This vulnerability is fixed in 9.2.0.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	calibre	sid	`9.17.0+ds+~1.1.2-1`	fixed
Debian	calibre	forky	`9.17.0+ds+~1.1.2-1`	fixed
Debian	calibre	trixie	`8.5.0+ds-1+deb13u3`	fixed
Debian	calibre	bookworm	`6.13.0+repack-2+deb12u9`	fixed
Debian	calibre	bookworm-security	`6.13.0+repack-2+deb12u10`	fixed
Opensuse	calibre	tumbleweed	`9.7.0-1.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	calibre	source	sid	`9.2.0+ds+~0.10.5-1`	not yet assigned	Not reported	Not reported
Debian	calibre	source	forky	`9.2.0+ds+~0.10.5-1`	not yet assigned	Not reported	Not reported
Debian	calibre	source	trixie	`8.5.0+ds-1+deb13u2`	not yet assigned	Not reported	Not reported
Debian	calibre	source	bookworm	`6.13.0+repack-2+deb12u6`	not yet assigned	Not reported	Not reported
Opensuse	calibre	rpm	tumbleweed	`9.7.0-1.1`	Not reported	OPENSUSE-SU-2026:10587-1	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[calibre]Affected
Details (4)
- 6.13.0+repack-2+deb12u9 · all · bookworm
  Affected · Fixed: 6.13.0+repack-2+deb12u6
  dsa · calibre · debian · bookworm; dsa · calibre · debian · 12
- 6.13.0+repack-2+deb12u9 · all · bookworm
  Affected · Fixed: 6.13.0+repack-2+deb12u6
  dsa · calibre · debian · bookworm; dsa · calibre · debian · 12
- 6.13.0+repack-2+deb12u10 · all · bookworm-security
  Affected · Fixed: 6.13.0+repack-2+deb12u6
  dsa · calibre · debian · bookworm; dsa · calibre · debian · 12
- 6.13.0+repack-2+deb12u10 · all · bookworm-security
  Affected · Fixed: 6.13.0+repack-2+deb12u6
  dsa · calibre · debian · bookworm; dsa · calibre · debian · 12
[calibre-bin]Affected
Source package: [calibre]
Details (4)
- 6.13.0+repack-2+deb12u9 · amd64 · bookworm
  Affected · Fixed: 6.13.0+repack-2+deb12u6
  dsa · calibre · debian · bookworm; dsa · calibre · debian · 12
- 6.13.0+repack-2+deb12u9 · arm64 · bookworm
  Affected · Fixed: 6.13.0+repack-2+deb12u6
  dsa · calibre · debian · bookworm; dsa · calibre · debian · 12
- 6.13.0+repack-2+deb12u10 · amd64 · bookworm-security
  Affected · Fixed: 6.13.0+repack-2+deb12u6
  dsa · calibre · debian · bookworm; dsa · calibre · debian · 12
- 6.13.0+repack-2+deb12u10 · arm64 · bookworm-security
  Affected · Fixed: 6.13.0+repack-2+deb12u6
  dsa · calibre · debian · bookworm; dsa · calibre · debian · 12

[Debian 13 (Trixie)]

[calibre]Fixed
Details (4)
- 8.5.0+ds-1+deb13u3 · all · trixie
  Fixed · Fixed: 8.5.0+ds-1+deb13u2
  dsa · calibre · debian · 13
- 8.5.0+ds-1+deb13u3 · all · trixie
  Fixed · Fixed: 8.5.0+ds-1+deb13u2
  dsa · calibre · debian · 13
- 8.16.2+ds+~0.10.5-3~bpo13+1 · all · trixie-backports
  Fixed · Fixed: 8.5.0+ds-1+deb13u2
  dsa · calibre · debian · 13
- 8.16.2+ds+~0.10.5-3~bpo13+1 · all · trixie-backports
  Fixed · Fixed: 8.5.0+ds-1+deb13u2
  dsa · calibre · debian · 13
[calibre-bin]Fixed
Source package: [calibre]
Details (4)
- 8.5.0+ds-1+deb13u3 · amd64 · trixie
  Fixed · Fixed: 8.5.0+ds-1+deb13u2
  dsa · calibre · debian · 13
- 8.5.0+ds-1+deb13u3 · arm64 · trixie
  Fixed · Fixed: 8.5.0+ds-1+deb13u2
  dsa · calibre · debian · 13
- 8.16.2+ds+~0.10.5-3~bpo13+1 · amd64 · trixie-backports
  Fixed · Fixed: 8.5.0+ds-1+deb13u2
  dsa · calibre · debian · 13
- 8.16.2+ds+~0.10.5-3~bpo13+1 · arm64 · trixie-backports
  Fixed · Fixed: 8.5.0+ds-1+deb13u2
  dsa · calibre · debian · 13

[openSUSE Tumbleweed]

[calibre]Fixed
Source package: [calibre]
Details (1)
- 9.14.0-1.1 · x86_64 · tumbleweed
  Fixed · Fixed: 9.7.0-1.1
  dsa · calibre · opensuse · tumbleweed

Observed: Oct 24, 2026, 12:53:31 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]