CVE-2025-59950: freshrss — Exploit & Fix

Description

FreshRSS is a free, self-hostable RSS aggregator. In versions 1.26.3 and below, due to a bypass of double clickjacking protection (confirmation dialog), it is possible to trick the admin into clicking the Promote button in another user's management page after the admin double clicks on a button inside an attacker-controlled website. A successful attack can allow the attacker to promote themselves to "admin" and log into other users' accounts; the attacker has to know the specific instance URL they're targeting. This issue is fixed in version 1.27.0.

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CVSS v3.1 Score

6.7

MEDIUM

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

Weakness Type (CWE)

CWE-1021 CWE-1021

Affected Products

Vendor	Product	Versions
freshrss	freshrss	< 1.27.0

References

Advisories & Patches

https://github.com/FreshRSS/FreshRSS/pull/7771 https://github.com/FreshRSS/FreshRSS/security/advisories/GHSA-j66v-hvqx-5vh3 https://github.com/FreshRSS/FreshRSS/security/advisories/GHSA-j66v-hvqx-5vh3

Exploits

https://github.com/FreshRSS/FreshRSS/security/advisories/GHSA-j66v-hvqx-5vh3 https://github.com/FreshRSS/FreshRSS/security/advisories/GHSA-j66v-hvqx-5vh3

Other References

https://github.com/FreshRSS/FreshRSS/releases/tag/1.27.0

Frequently Asked Questions

What is CVE-2025-59950? +

FreshRSS is a free, self-hostable RSS aggregator. In versions 1.26.3 and below, due to a bypass of double clickjacking protection (confirmation dialog), it is possible to trick the admin into clicking the Promote button in another user's management page after the admin double clicks on a button inside an attacker-controlled website. A successful attack can allow the attacker to promote themselves to "admin" and log into other users' accounts; the attacker has to know the specific instance URL they're targeting. This issue is fixed in version 1.27.0. It has a CVSS v3.1 base score of 6.7 (MEDIUM).

How severe is CVE-2025-59950? +

CVE-2025-59950 has a CVSS v3.1 score of 6.7 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-59950? +

CVE-2025-59950 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-2025-59950? +

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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