CVE-2026-0562

HIGH EPSS 18.4%
Published Mar 29, 20263mo ago · Modified Jun 17, 20261w ago
8.3 CVSS 3.1
High
Find Similar
Published Mar 29, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
8.3
Exploitability
2.8
Impact
5.5
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability Low

Threat Intelligence

EPSS Exploit Probability
18.4% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-863 Incorrect Authorization Authorization

Affected Products 1

VendorProductVersionRange
lollmslollms* ≤2.1.0

References 3

  • aydinnyunus.github.io https://aydinnyunus.github.io/2026/04/18/idor-lollms-friend-request-cve-2026-0562/
  • github.com https://github.com/parisneo/lollms/commit/c46297799f8e1e23305373f8350746b905e0e83c
    Patch
  • huntr.com https://huntr.com/bounties/6aab01ca-a138-4a1d-bef9-3bce145359bf
    ExploitIssue TrackingThird Party Advisory

Remediation

  • github.com https://github.com/parisneo/lollms/commit/c46297799f8e1e23305373f8350746b905e0e83c
    Patch