Insecure Direct Object Reference (IDOR) in parisneo/lollms
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-863.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA parisneo/lollms (parisneo) Fixed in 2.2.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
parisneo/lollms 2.2.0
3 records Highest priority Priority HIGH 3 HIGH
Other records, highest priority first
- TI-2026-00360 Unauthenticated File Upload in parisneo/lollmsPriority HIGH 81
- TI-2026-00362 Server-Side Request Forgery (SSRF) in parisneo/lollmsPriority HIGH 72
Timeline
- 2026-10-02 Threatist record created from CVE-2026-0562
- 2026-10-03 Alias added: GHSA-2j48-mfm5-x2hv
References
More parisneo vulnerabilities
- TI-2026-00842 Improper Access Control via Weak JWT Token in parisneo/lollms CVSS 3.0CRITICAL 9.8
- TI-2024-05059 Remote Code Execution via Path Traversal in parisneo/lollms CVSS 3.0CRITICAL 9.8
- TI-2024-04029 Remote Code Execution via `/apply_settings` and `/execute_code` in parisneo/lollms-webui CVSS 3.0CRITICAL 9.8
- TI-2024-04023 Remote Code Execution due to LFI in '/install_extension' in parisneo/lollms-webui CVSS 3.1CRITICAL 9.8
- TI-2024-03798 Arbitrary Code Execution in parisneo/lollms CVSS 3.0CRITICAL 9.8
- TI-2024-02196 Arbitrary Upload & Read via Path Traversal in parisneo/lollms-webui CVSS 3.0CRITICAL 9.6
Sources
- CVE-2026-0562 · CVE Program
- CVE-2026-0562 · NVD
- FIRST EPSS
- GHSA-2j48-mfm5-x2hv · GitHub Advisory Database · CC BY 4.0
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