CVE-2026-25635

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 v3 8.6 HIGH

8.6^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/kovidgoyal/calibre/commit/9739232fcb029ac15dfe52ccd4fdb4a07ebb6ce9	Patch
https://github.com/kovidgoyal/calibre/security/advisories/GHSA-32vh-whvh-9fxr	Exploit Third Party Advisory
https://0x5t.raptx.org/posts/calibre-chm-rce	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:calibre-ebook:calibre:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-06 21:16

Updated : 2026-02-17 21:27

NVD link : CVE-2026-25635

Mitre link : CVE-2026-25635

CVE.ORG link : CVE-2026-25635

JSON object : View

Products Affected

calibre-ebook

calibre

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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