CVE-2025-46341: freshrss SSRF — Exploit & Fix

Description

FreshRSS is a self-hosted RSS feed aggregator. Prior to version 1.26.2, 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. An attacker can send specially crafted requests in order to gain unauthorized access to internal services. This can also lead to privilege escalation like in the demonstrated scenario, although users that have setup OIDC are not affected by privilege escalation. Version 1.26.2 contains a patch for the issue.

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CVSS v3.1 Score

7.1

HIGH

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N

Weakness Type (CWE)

CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Vendor	Product	Versions
freshrss	freshrss	< 1.26.2

References

Advisories & Patches

https://github.com/FreshRSS/FreshRSS/commit/6bb8680ae0051b9a2ff344f17814f4fa5d844628 https://github.com/FreshRSS/FreshRSS/security/advisories/GHSA-w3m8-wcf4-h8vm

Exploits

https://github.com/FreshRSS/FreshRSS/security/advisories/GHSA-w3m8-wcf4-h8vm

Frequently Asked Questions

What is CVE-2025-46341? +

FreshRSS is a self-hosted RSS feed aggregator. Prior to version 1.26.2, 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. An attacker can send specially crafted requests in order to gain unauthorized access to internal services. This can also lead to privilege escalation like in the demonstrated scenario, although users that have setup OIDC are not affected by privilege escalation. Version 1.26.2 contains a patch for the issue. It has a CVSS v3.1 base score of 7.1 (HIGH).

How severe is CVE-2025-46341? +

CVE-2025-46341 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-46341? +

CVE-2025-46341 affects products from freshrss, specifically: freshrss. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-46341? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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