GHSA-J5PR-VRJJ-9V4H

Vulnerability from github – Published: 2025-07-07 12:30 – Updated: 2025-07-08 18:44
VLAI?
Summary
Lord of Large Language Models vulnerable to Observable Discrepancy attack via authenticate_user function
Details

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.

Severity ?
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "lollms"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "11.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-6386"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-203"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-07-08T18:44:08Z",
    "nvd_published_at": "2025-07-07T10:15:29Z",
    "severity": "HIGH"
  },
  "details": "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\u0027s 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.",
  "id": "GHSA-j5pr-vrjj-9v4h",
  "modified": "2025-07-08T18:44:08Z",
  "published": "2025-07-07T12:30:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-6386"
    },
    {
      "type": "WEB",
      "url": "https://github.com/parisneo/lollms/commit/f78437f7b5aa39a78c6201912faf4e0645a38c48"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ParisNeo/lollms"
    },
    {
      "type": "WEB",
      "url": "https://huntr.com/bounties/6da05485-d219-4f18-9ffc-991053524b67"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Lord of Large Language Models vulnerable to Observable Discrepancy attack via authenticate_user function"
}


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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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