Auth bypass in Lollms
CVE-2026-0562
A critical security vulnerability in parisneo/lollms versions up to 2.2.0 allows any authenticated user to accept or reject friend requests belonging to other users. The `respond_request()` function in `backend/routers/friends.py` does not implement proper authorization checks, enabling Insecure Direct Object Reference (IDOR) attacks. Specifically, the `/api/friends/requests/{friendship_id}` endpoint fails to verify whether the authenticated user is part of the friendship or the intended recipient of the request. This vulnerability can lead to unauthorized access, privacy violations, and potential social engineering attacks. The issue has been addressed in version 2.2.0.
Vulnerability class: Broken Access Control
EPSS: 0.003 (18.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.
Affected products
- Lollms
- Parisneo Parisneo/lollms — versions unspecified
Weakness classification (CWE)
References
- security@huntr.dev (Exploit, Third Party Advisory, Issue Tracking)
- security@huntr.dev (Patch)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2026-0562?
- CVE-2026-0562 is a high-severity vulnerability in Lollms, classified under Incorrect Authorization. CVSS score: 8.3/10. Published 2026-03-29.
- How severe is CVE-2026-0562?
- High severity. CVSS v3 base score is 8.3 out of 10.