EUVD-2026-17039CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
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3Description
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.
Analysis
Authenticated users in parisneo/lollms (versions before 2.2.0) can hijack friend requests intended for other users through an Insecure Direct Object Reference (IDOR) flaw in the `/api/friends/requests/{friendship_id}` endpoint. The vulnerability enables any logged-in user to accept or reject friendship requests by manipulating the `friendship_id` parameter without authorization checks, leading to unauthorized social graph manipulation and potential account compromise via social engineering. …
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Remediation
Within 24 hours: Inventory all LoLLMS deployments and identify current versions in use; disable or restrict the `/api/friends/requests/` endpoint if version is below 2.2.0. Within 7 days: Upgrade all LoLLMS instances to version 2.2.0 or later (verified against commit c462977). …
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