CVE-2026-33205

calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Prior to version 9.6.0, a Server-Side Request Forgery vulnerability in the background-image endpoint of calibre e-book reader's web view allows an attacker to perform blind GET requests to arbitrary URLs and exfiltrate information out from the ebook sandbox. Version 9.6.0 patches the issue.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/kovidgoyal/calibre/security/advisories/GHSA-4926-v9px-wv7v	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) calibre es un gestor de libros electrónicos multiplataforma para ver, convertir, editar y catalogar libros electrónicos. Antes de la versión 9.6.0, una vulnerabilidad de falsificación de petición del lado del servidor en el endpoint background-image de la vista web del lector de libros electrónicos calibre permite a un atacante realizar peticiones GET ciegas a URLs arbitrarias y exfiltrar información fuera de la sandbox del libro electrónico. La versión 9.6.0 corrige el problema.

Information

Published : 2026-03-27 15:16

Updated : 2026-10-26 21:10

NVD link : CVE-2026-33205

Mitre link : CVE-2026-33205

CVE.ORG link : CVE-2026-33205

JSON object : View

Products Affected

calibre-ebook

calibre

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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