Stored XSS in Gitea

vendor:

Gitea

by:

Catalin Iovita & Alexandru Postolache

6.1

CVSS

HIGH

Stored Cross-Site Scripting (XSS)

CWE

Product Name: Gitea

Affected Version From: 1.22.0

Affected Version To: 1.22.0

Patch Exists: NO

Related CWE: CVE-2024-6886

CPE: a:go-gitea:gitea:1.22.0

Metasploit:

Other Scripts:

Platforms Tested: Linux

2024

Gitea version 1.22.0 is susceptible to a Stored Cross-Site Scripting (XSS) vulnerability. This security flaw enables a malicious actor to insert harmful scripts that are stored on the server and run within the context of another user's session.

Mitigation:

To mitigate this vulnerability, it is recommended to sanitize and validate user inputs to prevent the injection of malicious scripts. Additionally, implementing content security policy (CSP) headers can help mitigate the impact of XSS attacks.

Source

Exploit-DB raw data:

# Exploit Title: Stored XSS in Gitea
# Date: 27/08/2024
# Exploit Authors: Catalin Iovita & Alexandru Postolache
# Vendor Homepage: (https://github.com/go-gitea/gitea)
# Version: 1.22.0
# Tested on: Linux 5.15.0-107, Go 1.23.0
# CVE: CVE-2024-6886

## Vulnerability Description
Gitea 1.22.0 is vulnerable to a Stored Cross-Site Scripting (XSS) vulnerability. This vulnerability allows an attacker to inject malicious scripts that get stored on the server and executed in the context of another user's session.

## Steps to Reproduce
1. Log in to the application.
2. Create a new repository or modify an existing repository by clicking the Settings button from the `$username/$repo_name/settings` endpoint.
3. In the Description field, input the following payload:

    <a href=javascript:alert()>XSS test</a>

4. Save the changes.
5. Upon clicking the repository description, the payload was successfully injected in the Description field. By clicking on the message, an alert box will appear, indicating the execution of the injected script.