by Kastro
Paper/Archive/CVE-2026-26065

CVE-2026-26065

kovidgoyal calibre — calibre: Path Traversal can Lead to Arbitrary File Write and Potential Code Execution

EPSS 0.6%CVSS 9.3
critical.is priorityof 100
38
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 48.2.482 × 209.6No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
calibre< 9.3.0–CNA

Scores by source

GitHub_M (CNA)9.3CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgithub.com/kovidgoyal/calibre/security/advisories/GHSA-vmfh-7mr7-pp2wrefgithub.com/kovidgoyal/calibre/commit/b6da1c3878c06eb1356cb0ec1106cb66e0e9bfb8