CVE-2026-25635

HIGH

8.6

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.

CVE Details

CVSS v3.1 Score8.6

SeverityHIGH

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published2/6/2026

Last Modified2/17/2026

Sourcenvd

Honeypot Sightings0

Affected Products

calibre-ebook:calibre

Weaknesses (CWE)

CWE-22

References

https://github.com/kovidgoyal/calibre/commit/9739232fcb029ac15dfe52ccd4fdb4a07ebb6ce9(security-advisories@github.com)

https://github.com/kovidgoyal/calibre/security/advisories/GHSA-32vh-whvh-9fxr(security-advisories@github.com)

https://0x5t.raptx.org/posts/calibre-chm-rce(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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