CVE-2025-6386
highpriority · track · 0EPSS 0.004 · 35 %ileEURUUSEPSS · scored 2026-10-27
The parisneo/lollms repository is affected by a timing attack vulnerability in the `authenticate_user` function within the `lollms_authentication.py` file. This vulnerability allows attackers to enumerate valid usernames and guess passwords incrementally by analyzing response time differences. The affected version is the latest, and the issue is resolved in version 20.1. The vulnerability arises from the use of Python's default string equality operator for password comparison, which compares characters sequentially and exits on the first mismatch, leading to variable response times based on the number of matching initial characters.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
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affected products (3)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- GHSA-j5pr-vrjj-9v4hLord of Large Language Models vulnerable to Observable Discrepancy attack via authenticate_user function2025-07-07ghsa · osvUS
The parisneo/lollms repository is affected by a timing attack vulnerability in the `authenticate_user` function within the `lollms_authentication.py` file. This vulnerability allows attackers to enumerate valid usernames and guess passwords incrementally by analyzing response time differences. The affected version is the latest, and the issue is resolved in commit f78437f. The vulnerability arises from the use of Python's default string equality operator for password comparison, which compares characters sequentially and exits on the first mismatch, leading to variable response times based on the number of matching initial characters.
- PYSEC-2026-1590Lord of Large Language Models vulnerable to Observable Discrepancy attack via authenticate_user function2026-07-07vendor · osvUS
The parisneo/lollms repository is affected by a timing attack vulnerability in the `authenticate_user` function within the `lollms_authentication.py` file. This vulnerability allows attackers to enumerate valid usernames and guess passwords incrementally by analyzing response time differences. The affected version is the latest, and the issue is resolved in commit f78437f. The vulnerability arises from the use of Python's default string equality operator for password comparison, which compares characters sequentially and exits on the first mismatch, leading to variable response times based on the number of matching initial characters.
also known as (7)
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sources
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references (7)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2025-6386cnnvd
- https://github.com/parisneo/lollms/commit/f78437f7b5aa39a78c6201912faf4e0645a38c48cnnvd
- https://huntr.com/bounties/6da05485-d219-4f18-9ffc-991053524b67cnnvd
- https://github.com/parisneo/lollms/commit/f78437f7b5aa39a78c6201912faf4e0645a38c48enisa_euvd
- https://huntr.com/bounties/6da05485-d219-4f18-9ffc-991053524b67enisa_euvd
- https://github.com/parisneo/lollms/commit/f78437f7b5aa39a78c6201912faf4e0645a38c48nvd
- https://huntr.com/bounties/6da05485-d219-4f18-9ffc-991053524b67nvd
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