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Vulnerability record · CVE-2026-1115 · published 10 April 2026

CVE-2026-1115: Lollms cross-site scripting vulnerability

Lollms · Lollms

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.

9.6 CVSS 3.0 Critical EPSS 1.3% · top 31.6% CWE-79 · Cross-site scripting
9.6CVSS 3.0 base score
1.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/parisneo/lollms/commit/9767b882dbc893c388a286856beeaead69b8292a Patch
https://huntr.com/bounties/099aa4fe-7165-4337-889c-3fb4f1aa71aa ExploitThird Party Advisory
https://huntr.com/bounties/099aa4fe-7165-4337-889c-3fb4f1aa71aa ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-1114Lollms improper access control vulnerabilityIn 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 f…EPSS 0.54%9.8CVE-2026-0558Lollms improper authentication vulnerabilityA vulnerability in parisneo/lollms, up to and including version 2.2.0, allows unauthenticated users to upload and process files through the `/api/fil…EPSS 2.0%9.8CVE-2024-3429Lollms path traversal vulnerabilityA path traversal vulnerability exists in the parisneo/lollms application, specifically within the `sanitize_path_from_endpoint` and `sanitize_path` f…EPSS 28%8.3CVE-2026-0562Lollms incorrect authorization vulnerabilityA critical security vulnerability in parisneo/lollms versions up to 2.2.0 allows any authenticated user to accept or reject friend requests belonging…EPSS 0.27%7.5CVE-2026-0560Lollms server-side request forgery (ssrf) vulnerabilityA Server-Side Request Forgery (SSRF) vulnerability exists in parisneo/lollms versions prior to 2.2.0, specifically in the `/api/files/export-content`…EPSS 1.8%7.5CVE-2024-4881Lollms path traversal vulnerabilityA path traversal vulnerability exists in the parisneo/lollms application, affecting version 9.4.0 and potentially earlier versions, but fixed in vers…EPSS 0.89%6.3CVE-2024-4499Lollms cross-site request forgery vulnerabilityA Cross-Site Request Forgery (CSRF) vulnerability exists in the XTTS server of parisneo/lollms version 9.6 due to a lax CORS policy. The vulnerabilit…EPSS 0.18%6.1CVE-2026-1116Lollms cross-site scripting vulnerabilityA Cross-site Scripting (XSS) vulnerability was identified in the `from_dict` method of the `AppLollmsMessage` class in parisneo/lollms prior to versi…EPSS 0.26%

Source: NIST National Vulnerability Database (record CVE-2026-1115), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.