PT-2026-28473 · Calibre · Calibre

Emilvirkki · Published 2026-03-27 · Updated 2026-04-21 · CVE-2026-33205

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions calibre versions prior to 9.6.0

Description A Server-Side Request Forgery (SSRF) issue in the 'background-image' endpoint of the web view allows an attacker to perform blind GET requests to arbitrary URLs. This can lead to the exfiltration of information from the ebook sandbox. SSRF is a flaw where an attacker can force a server-side application to make HTTP requests to an arbitrary domain of the attacker's choosing.

Recommendations Update to version 9.6.0 or later.

Exploit

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

CVE-2026-33205

GHSA-4926-V9PX-WV7V

OPENSUSE-SU-2026:10587-1

Affected Products

Calibre

References · 20

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33205.json · Exploit
• https://github.com/kovidgoyal/calibre/security/advisories/GHSA-4926-v9px-wv7v · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-33205 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-33205 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-33205 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-33205 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10587-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-33205 · Security Note
• https://ubuntu.com/security/CVE-2026-33205 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-33205 · Security Note
• https://suse.com/security/cve/CVE-2026-33206 · Note
• https://suse.com/security/cve/CVE-2026-27824 · Note
• https://suse.com/security/cve/CVE-2026-30853 · Note
• https://suse.com/security/cve/CVE-2026-27810 · Note
• https://suse.com/security/cve/CVE-2026-26065 · Note