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Critical

parisneo/lollms vulnerable to stored XSS in the social feature

  • Disclosed: 10.04.2026
  • Updated: 11.10.2026 12:20

A Stored Cross-Site Scripting (XSS) vulnerability was identified in the social feature of parisneo/lollms, affecting the latest version prior to 2.2.0. The vulnerability exists in the create_post function within backend/routers/social/__init__.py, where user-provided content is directly assigned to the DBPost model without sanitization. This allows attackers to inject and store malicious JavaScript, which is executed in the browsers of users viewing the Home Feed, including administrators. This can lead to account takeover, session hijacking, and wormable attacks. The issue is resolved in version 2.2.0.

Affected software

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PlatformPackageVulnerable versionsFixed in
Python (PyPI) lollms < 2.2.0 2.2.0

References

CVSS score 9.6/10
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Weakness (CWE)
CWE-79
Platform
Python (PyPI)
Package
lollms
Disclosed
10.04.2026
Updated
11.10.2026 12:20

Sources and licenses

OSV / GitHub Advisory Database - GHSA-8wrq-fv5f-pfp2 - CC BY 4.0

OSV / GitHub Advisory Database - PYSEC-2026-401 - PyPA Advisory Database; CC BY 4.0

Vulnerability history: lollms

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (24) in the archive
Total entries
24
First → latest
05.2024 04.2026
Without a fix
9
Exploited in attacks
0

Severity breakdown

  • Critical 6
  • High 12
  • Medium 5
  • Low 1

Disclosures per year

Severity:
  1. parisneo/lollms vulnerable to stored XSS in the social feature this entry
    Critical · 9.6 CVE-2026-1115 < 2.2.0 2.2.0
  2. In parisneo/lollms version 2.1.0, the application's session management is vulnerable to improper access control due to the use of a weak secret key for signing JSON Web Tokens (JWT). This vulnerabilit
    Critical · 9.8 CVE-2026-1114 <= 2.1.0 no fix
  3. A Server-Side Request Forgery (SSRF) vulnerability exists in parisneo/lollms versions prior to 2.2.0, specifically in the `/api/files/export-content` endpoint. The `_download_image_to_temp()` function
    High · 7.5 CVE-2026-0560 < 2.1.1 2.1.1
  4. 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 i
    High · 8.3 CVE-2026-0562 < 2.1.1 2.1.1
  5. A vulnerability in parisneo/lollms, up to and including version 2.2.0, allows unauthenticated users to upload and process files through the `/api/files/extract-text` endpoint. This endpoint does not e
    Critical · 9.8 CVE-2026-0558 < 2.1.1 2.1.1
  6. Lollms has an Improper Access Control vulnerability
    High · 8.2 CVE-2026-1117 < 2.1.0 2.1.0
  7. Lord of Large Language Models vulnerable to Observable Discrepancy attack via authenticate_user function
    High · 7.5 CVE-2025-6386 <= 11.0.0 no fix
  8. LoLLMS Code Injection vulnerability
    High · 8.4 CVE-2024-6982 < 11.0.0 11.0.0
  9. A vulnerability in the discussion image upload function of the Lollms application, version v9.9, allows for the uploading of SVG files. Due to incomplete filtering in the sanitize_svg function, this c
    Critical · 9.0 CVE-2024-6581 all versions no fix
  10. LoLLMS vulnerable to Expected Behavior Violation
    High · 7.3 CVE-2024-6281 < 9.5.1 9.5.1
  11. lollms vulnerable to path traversal due to unauthenticated root folder settings change
    High · 8.6 CVE-2024-6085 <= 9.5.1 no fix
  12. lollms vulnerable to dot-dot-slash path traversal in XTTS server
    High · 7.3 CVE-2024-6139 <= 9.5.1 no fix
  13. lollms path traversal vulnerability allows overriding of config.yaml file, leading to RCE
    High · 7.4 CVE-2024-5824 < 9.5.0 9.5.0
  14. Remote Code Execution via path traversal bypass in lollms
    Critical · 9.8 CVE-2024-5443 >= 5.9.0, < 9.5.1 9.5.1
  15. parisneo/lollms Local File Inclusion (LFI) attack
    Critical · 9.1 CVE-2024-4315 < 9.5.0 9.5.0
  16. LoLLMS Path Traversal vulnerability
    High · 9.8 CVE-2024-3429 < 9.5.0 9.5.0
  17. A path traversal vulnerability exists in the parisneo/lollms application, affecting version 9.4.0 and potentially earlier versions, but fixed in version 5.9.0. The vulnerability arises due to improper
    High · 7.5 CVE-2024-4881 < 5.9.0 5.9.0
  18. LoLLMS Command Injection vulnerability
    High · 9.8 CVE-2024-4078 < 9.5.0 9.5.0

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