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.

Project Subscriptions

Vendors Products
Openwebui Subscribe
Open Webui Subscribe
Advisories
Source ID Title
EUVD EUVD EUVD-2025-6956 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.
Github GHSA Github GHSA GHSA-43g4-487m-5q6m Open WebUI Vulnerable to a Session Fixation Attack
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 01 Apr 2025 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Openwebui
Openwebui open Webui
CPEs cpe:2.3:a:openwebui:open_webui:0.3.8:*:*:*:*:*:*:*
Vendors & Products Openwebui
Openwebui open Webui
Metrics cvssV3_1

{'score': 9.0, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H'}


Thu, 20 Mar 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 20 Mar 2025 10:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Session Fixation in open-webui/open-webui
Weaknesses CWE-79
References
Metrics cvssV3_0

{'score': 7.6, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: @huntr_ai

Published:

Updated: 2025-03-20T13:16:31.805Z

Reserved: 2024-07-23T19:34:05.033Z

Link: CVE-2024-7053

cve-icon Vulnrichment

Updated: 2025-03-20T13:16:19.654Z

cve-icon NVD

Status : Analyzed

Published: 2025-03-20T10:15:36.217

Modified: 2025-04-01T20:33:49.153

Link: CVE-2024-7053

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses