{"cve":"CVE-2025-6386","nvd":{"published":"2025-07-07T10:15:29.187","modified":"2026-06-17T10:01:46.743","status":"Deferred","description":"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_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-203"],"references":["https://github.com/parisneo/lollms/commit/f78437f7b5aa39a78c6201912faf4e0645a38c48","https://huntr.com/bounties/6da05485-d219-4f18-9ffc-991053524b67"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:04:28.436527499+00:00"},"epss":{"cve":"CVE-2025-6386","score":0.00408,"percentile":0.35128,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-j5pr-vrjj-9v4h","url":"https://osv.dev/vulnerability/GHSA-j5pr-vrjj-9v4h","summary":"Lord of Large Language Models vulnerable to Observable Discrepancy attack via authenticate_user function","modified":"2026-07-07T17:56:48.612215503Z","packages":[{"ecosystem":"PyPI","name":"lollms","purl":"pkg:pypi/lollms","ranges":["<=11.0.0"],"fixed":[]}]},{"id":"PYSEC-2026-1590","url":"https://osv.dev/vulnerability/PYSEC-2026-1590","summary":"Lord of Large Language Models vulnerable to Observable Discrepancy attack via authenticate_user function","modified":"2026-07-07T17:46:56.158593481Z","packages":[{"ecosystem":"PyPI","name":"lollms","purl":"pkg:pypi/lollms","ranges":["<=11.0.0"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}