🛡️ CVE-2026-0562 — lollms

🟠 CVSS 8.3 — High ⚠️ Exploit Public CWE-863 OSV
8.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability low.

Weakness class

CVE-2026-0562 is classified as CWE-863: Incorrect Authorization. An authorisation check runs but reaches the wrong conclusion, permitting actions it should refuse.

Affected software

CVE-2026-0562 is recorded against 1 package.

  • lollms (fixed in 2.1.1)

Timeline and source

Published on 29 March 2026 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. A vendor advisory or fix has been published. Record sourced from OSV.

References

aydinnyunus.github.io (Web)
huntr.com (Report)
github.com (Fix)

Details

Severity HIGH
CVSS Score 8.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
CWE CWE-863
Public Exploit ⚠️ Yes
Source OSV
Published 2026-03-29
Updated 2026-08-12
Modified 2026-06-17

Affected Packages

Software From version Fixed in
lollms — 2.1.1

Similar Threats

Exploit Protection

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