CVE-2026-33205calibre has Server-Side Request Forgery in ebook viewer backend
Updated under an hour ago ()
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It affects kovidgoyal calibre and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 4.8 MEDIUM (v4.0, CNA)CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-918
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Mar 27, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
kovidgoyal calibre kovidgoyal:calibre (from the name) | before 9.6.0 | CNA record |
calibre-ebook calibre calibre-ebook:calibre | before 9.6.0 | NVD |
References
- https://github.com/kovidgoyal/calibre/security/advisories/GHSA-4926-v9px-wv7vx-refsource-confirm, exploit, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.