Unrated severityNVD Advisory· Published Mar 27, 2026· Updated Mar 27, 2026
calibre has Server-Side Request Forgery in ebook viewer backend
CVE-2026-33205
Description
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.
Affected products
2- Range: <9.6.0
- kovidgoyal/calibrev5Range: < 9.6.0
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1- github.com/kovidgoyal/calibre/security/advisories/GHSA-4926-v9px-wv7vmitrex_refsource_CONFIRM
News mentions
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