Overview #
Multiple Cross-site Scripting (XSS) vulnerabilities exist in FreshRSS version 1.11.1. The vulnerabilities allow remote attackers to inject arbitrary web script or HTML.
Vulnerability Details #
Affected Versions: 1.11.1 and earlier
Root Cause: Insufficient input validation and output encoding on multiple parameters allows XSS attacks.
Exploitation Requirements #
- Authentication may be required
- Victim must visit crafted URLs or pages
Impact #
Remote attackers can exploit these vulnerabilities to:
- Steal user session cookies
- Access RSS feed data
- Perform actions on behalf of users
Proof of Concept #
Details available upon request.
Solution #
Upgrade to a patched version of FreshRSS that includes proper input sanitization.
References #
- Vendor notification sent
Timeline #
2018-01-01— Discovered
Credits: Omar Kurt