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.
Metrics
Affected Vendors & Products
References
History
Tue, 30 Sep 2025 14:15:00 +0000
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ssvc
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Tue, 30 Sep 2025 09:00:00 +0000
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Freshrss
Freshrss freshrss |
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Vendors & Products |
Freshrss
Freshrss freshrss |
Mon, 29 Sep 2025 23:00:00 +0000
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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 |
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Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2025-09-30T13:47:05.742Z
Reserved: 2025-09-23T14:33:49.506Z
Link: CVE-2025-59948

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

Status : Awaiting Analysis
Published: 2025-09-29T23:15:32.467
Modified: 2025-10-02T19:12:42.843
Link: CVE-2025-59948

No data.

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