FreshRSS is a free, self-hostable RSS aggregator. Versions 1.26.3 and below do not sanitize certain event handler attributes in feed content, so by finding a page that renders feed entries without CSP, it is possible to execute an XSS payload. The Allow API access authentication setting needs to be enabled by the instance administrator beforehand for the attack to work as it relies on api/query.php. An account takeover is possible by sending a change password request via the XSS payload / setting UserJS for persistence / stealing the autofill password / displaying a phishing page with a spoofed URL using history.replaceState() If the victim is an administrator, the attacker can also perform administrative actions. This issue is fixed in version 1.27.0.
History

Tue, 30 Sep 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Tue, 30 Sep 2025 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Freshrss
Freshrss freshrss
Vendors & Products Freshrss
Freshrss freshrss

Mon, 29 Sep 2025 23:00:00 +0000

Type Values Removed Values Added
Description FreshRSS is a free, self-hostable RSS aggregator. Versions 1.26.3 and below do not sanitize certain event handler attributes in feed content, so by finding a page that renders feed entries without CSP, it is possible to execute an XSS payload. The Allow API access authentication setting needs to be enabled by the instance administrator beforehand for the attack to work as it relies on api/query.php. An account takeover is possible by sending a change password request via the XSS payload / setting UserJS for persistence / stealing the autofill password / displaying a phishing page with a spoofed URL using history.replaceState() If the victim is an administrator, the attacker can also perform administrative actions. This issue is fixed in version 1.27.0.
Title FreshRSS is vulnerable to XSS due to lack of CSP on HTML query page
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-09-30T13:47:05.742Z

Reserved: 2025-09-23T14:33:49.506Z

Link: CVE-2025-59948

cve-icon Vulnrichment

Updated: 2025-09-30T13:46:48.065Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-09-29T23:15:32.467

Modified: 2025-10-02T19:12:42.843

Link: CVE-2025-59948

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-09-30T08:47:16Z