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CVE-2025-59948

6.7 · MEDIUM

FreshRSS is a free, self-hostable RSS aggregator.

Published Sep 29, 2025CWE-79EPSS 0.33%

Overview

CVE-2025-59948 is a medium-severity vulnerability. It was published on September 29, 2025 and has a CVSS 3.1 base score of 6.7 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.7, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/FreshRSS/FreshRSS/commit/7df6c201f2e6a6521d20718dfd8d9794c7437d1fGitHubgithub.com/FreshRSS/FreshRSS/releases/tag/1.27.0GitHubgithub.com/FreshRSS/FreshRSS/security/advisories/GHSA-rwhf-vjjx-gmm9GitHubgithub.com/FreshRSS/FreshRSS/security/advisories/GHSA-rwhf-vjjx-gmm9

How CyberStrike helps

Frequently asked questions

What is CVE-2025-59948?

CVE-2025-59948 is a medium-severity vulnerability. It was published on September 29, 2025 and has a CVSS 3.1 base score of 6.7 (MEDIUM).

How severe is CVE-2025-59948?

This vulnerability has a CVSS 3.1 base score of 6.7, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-59948?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-59948?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-59948 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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