ExploitPublished 3 Aug 2025

Swagger UI 1.0.3 - Cross-Site Scripting (XSS)

Source Exploit-DB RSS Feed

Severity

Medium

Rated by Threat Radar

Data as of 31 Oct 2025, 14:27 UTC

What to do

AI-suggested

Upgrade Swagger UI to the latest version where this XSS vulnerability is patched. If an official patch is not yet available, monitor vendor advisories closely.
Implement strict input validation and output encoding on all parameters and inputs rendered by Swagger UI to prevent injection of malicious scripts.
Deploy Content Security Policy (CSP) headers that restrict the execution of inline scripts and only allow trusted sources to reduce the impact of potential XSS payloads.
Restrict access to Swagger UI interfaces to trusted internal networks or authenticated users to reduce exposure.
Regularly audit and monitor web application logs for suspicious requests or attempts to exploit XSS vulnerabilities.
Educate developers and administrators about secure coding practices and the risks associated with exposing API documentation publicly.
Consider using web application firewalls (WAFs) with rules designed to detect and block XSS attack patterns targeting Swagger UI endpoints.

Description

Swagger UI 1.0.3 - Cross-Site Scripting (XSS)

Impact

For European organizations, the XSS vulnerability in Swagger UI 1.0.3 can lead to unauthorized access to sensitive API documentation and potentially to the theft of authentication tokens or session cookies. This can compromise the confidentiality of internal API endpoints and user data. Integrity may be affected if attackers inject malicious scripts that alter the behavior of the API documentation or perform actions on behalf of authenticated users. Availability impact is limited but could occur if attackers use the vulnerability to conduct phishing or social engineering attacks that disrupt normal operations. Organizations with public-facing Swagger UI instances are particularly at risk, as attackers can exploit the vulnerability remotely without authentication. This risk is heightened in sectors with stringent data protection regulations such as GDPR, where data breaches can result in significant fines and reputational damage. The presence of exploit code lowers the barrier for attackers, increasing the likelihood of targeted attacks against European companies relying on Swagger UI for API documentation and developer collaboration.

Indicators of compromise

Exploit source code

Exploit code for Swagger UI 1.0.3 - Cross-Site Scripting (XSS)C/C++ · 15,323 characters

/*
 * Author       : Byte Reaper
 * Telegram     : @ByteReaper0
 * CVE          : CVE-2025-8191
 * Title : Swagger UI 1.0.3 - Cross-Site Scripting (XSS)
 * Description : CVE-2025-8191, a vulnerability in the Swagger UI service due to poor description parameter filtering, leading to command execution on a remote server.
 *
 */

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "argparse.h"
#include <curl/curl.h>

int portSel = 0;
int portServerSel = 0;
int selectFile = 0;
const …

References

Community reviews

Loading reviews…