CVE-2026-0612: Thelibrarian The Librarian

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

The Librarian contains a information leakage vulnerability through the `web_fetch` tool, which can be used to retrieve arbitrary external content provided by an attacker, which can be used to proxy requests through The Librarian infrastructure. The vendor has fixed the vulnerability in all versions of TheLibrarian.

Affected products

• Thelibrarian The Librarian: affected versions not specified

Published 2026-01-16. Last modified 2026-06-17.