GHSA-43g4-487m-5q6m

Suggest an improvement
Source
https://github.com/advisories/GHSA-43g4-487m-5q6m
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/03/GHSA-43g4-487m-5q6m/GHSA-43g4-487m-5q6m.json
JSON Data
https://api.test.osv.dev/v1/vulns/GHSA-43g4-487m-5q6m
Aliases
Published
2025-03-20T12:32:46Z
Modified
2025-03-21T17:54:45.946097Z
Severity
  • 7.6 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N CVSS Calculator
Summary
Open WebUI Vulnerable to a Session Fixation Attack
Details

A vulnerability in open-webui/open-webui version 0.3.8 allows an attacker with a user-level account to perform a session fixation attack. The session cookie for all users is set with the default SameSite=Lax and does not have the Secure flag enabled, allowing the session cookie to be sent over HTTP to a cross-origin domain. An attacker can exploit this by embedding a malicious markdown image in a chat, which, when viewed by an administrator, sends the admin's session cookie to the attacker's server. This can lead to a stealthy administrator account takeover, potentially resulting in remote code execution (RCE) due to the elevated privileges of administrator accounts.

Database specific 
{
    "nvd_published_at": "2025-03-20T10:15:36Z",
    "cwe_ids": [
        "CWE-79"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2025-03-21T17:30:58Z"
}
References

Affected packages

PyPI / open-webui

Package

Name
open-webui
View open source insights on deps.dev
Purl
pkg:pypi/open-webui

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Last affected
0.3.8

Affected versions

0.*

0.1.124
0.1.125
0.2.0
0.2.1
0.2.2
0.2.3
0.2.4
0.2.5
0.3.0
0.3.1
0.3.2
0.3.3
0.3.4
0.3.5
0.3.6
0.3.7
0.3.8