PT-2025-23856 · Freshrss · Freshrss

Inverle

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Published

2025-06-04

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Updated

2025-06-04

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CVE-2025-46341

CVSS v3.1

7.1

High

VectorAV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N
Name of the Vulnerable Software and Affected Versions FreshRSS versions prior to 1.26.2
Description FreshRSS is a self-hosted RSS feed aggregator. When the server is using HTTP auth via reverse proxy, it's possible to impersonate any user either via the Remote-User header or the X-WebAuth-User header by making specially crafted requests via the add feed functionality and obtaining the CSRF token via XPath scraping. The attacker has to know the IP address of the proxied FreshRSS instance and the admin's username, while also having an account on the instance. This can lead to unauthorized access to internal services and potentially privilege escalation, although users that have setup OIDC are not affected by privilege escalation.
Recommendations For versions prior to 1.26.2, update to version 1.26.2 to resolve the issue. As a temporary workaround, consider restricting access to the add feed functionality and limiting the use of HTTP auth via reverse proxy until the patch is applied. Additionally, restrict the Remote-User and X-WebAuth-User headers to prevent header manipulation.

Exploit

Fix

LPE

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

CVE-2025-46341
GHSA-W3M8-WCF4-H8VM

Affected Products

Freshrss