CVE-2026-33205

EUVD-2026-16610
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.
SSRF
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.5 MEDIUM
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 6.91%
Affected Products (NVD)
VendorProductVersion
calibre-ebookcalibre
𝑥
< 9.6.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
calibre
bookworm
6.13.0+repack-2+deb12u9
fixed
bullseye
vulnerable
bullseye (security)
5.12.0+dfsg-1+deb11u5
fixed
forky
9.12.0+ds+~0.10.6-1
fixed
sid
9.13.0+ds+~0.10.6-1
fixed
trixie
8.5.0+ds-1+deb13u3
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
calibre
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
questing
ignored
resolute
needs-triage
xenial
ignored
Common Weakness Enumeration
References
https://github.com/kovidgoyal/calibre/security/advisories/GHSA-4926-v9px-wv7v