parisneo/lollms vulnerable to stored XSS in the social feature

CRITICAL 9.6CVE-2026-1115 · GHSA-8wrq-fv5f-pfp2 · PYSEC-2026-401 · Published 10/04/2026 · updated 26/10/2026

Package	Affected versions	Patched versions
lollms PyPI	`< 2.2.0`	`2.2.0`
lollms lollms	`≤ 2.1.0`	No fix yet

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.

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.

References

nvd.nist.gov/vuln/detail/CVE-2026-1115 · ADVISORY
parisneo/lollms commit 9767b88 · WEB
ParisNeo/lollms · PACKAGE
huntr.com/bounties/099aa4fe-7165-4337-889c-3fb4f1aa71aa · WEB
pypi.org/project/lollms · PACKAGE
GitHub Advisory GHSA-8wrq-fv5f-pfp2 · ADVISORY

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Package

Affected versions

Patched versions

lollms

PyPI

< 2.2.0

2.2.0

lollms

≤ 2.1.0

No fix yet

Description

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.