CVE-2026-25635 — Path Traversal in Calibre

CWE-22 — Path Traversal5 documents5 sources
Severity
8.6HIGHNVD
EPSS
0.1%
top 73.94%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Kovidgoyal CalibreCalibre-ebook CalibreDebian Calibre
Timeline
PublishedFeb 6

Description

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:HExploitability: 1.8 | Impact: 6.0

Affected Packages4 packages

▶debiandebian/calibre< calibre 9.2.0+ds+~0.10.5-1 (forky)
▶CVEListV5kovidgoyal/calibre< 9.2.0
▶Debiankovidgoyal/calibre< 9.2.0+ds+~0.10.5-1

Patches

Patch: github.com ↗

🔴Vulnerability Details

1
OSV
CVE-2026-25635: calibre is an e-book manager↗2026-02-06
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📋Vendor Advisories

2
Red Hat
calibre: Calibre: Remote Code Execution via path traversal in CHM reader↗2026-02-06
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Debian
CVE-2026-25635: calibre - calibre is an e-book manager. Prior to 9.2.0, Calibre's CHM reader contains a pa...↗2026
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🕵️Threat Intelligence

1
Wiz
CVE-2026-25635 Impact, Exploitability, and Mitigation Steps | Wiz↗
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CVE-2026-25635 — Path Traversal in Kovidgoyal Calibre | cvebase