---
id: CVE-2024-7053
aliases:
  - GHSA-43g4-487m-5q6m
  - PYSEC-2026-1720
title: Open WebUI Vulnerable to a Session Fixation Attack
summary: Open WebUI Vulnerable to a Session Fixation Attack
severity: high
cvss: 7.6
cvssVector: 'CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N'
vendor: open-webui
product: open-webui
ecosystem: pip
affected:
  - open-webui <= 0.3.8
published: '2025-03-20'
updated: '2026-07-07'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-43g4-487m-5q6m'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2024-7053'
  - url: 'https://github.com/open-webui/open-webui'
  - url: 'https://huntr.com/bounties/947f8191-0abf-4adf-b7c4-d4c19683aba2'
tags:
  - osv
  - pip
epss: 0.00675
epssPercentile: 0.49017
ingestedAt: '2026-07-08T18:25:45.240Z'
---

## Overview

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.

## Affected packages

- `open-webui <= 0.3.8`

## Remediation

Refer to the advisory for the patched release.