Description
FreshRSS is a self-hosted RSS feed aggregator. In versions 1.23.0 through 1.27.0, using a path traversal inside the `language` user configuration parameter, it's possible to call `install.php` and perform various administrative actions as an unprivileged user. These actions include logging in as the admin, creating a new admin user, or set the database to an attacker-controlled MySQL server and abuse it to execute code in FreshRSS by setting malicious feed `curl_params` inside the `feed` table. Version 1.27.1 fixes the issue.
Affected products
freshrss: freshrss
References8
- github.com/FreshRSS/FreshRSS/security/advisories/GHSA-6c8h-w3j5… ExploitPatchVendor Advisory
- github.com/FreshRSS/FreshRSS/security/advisories/GHSA-6c8h-w3j5… ExploitPatchVendor Advisory
- github.com/FreshRSS/FreshRSS/commit/79604aa4b3051f083d1734bd9e8… Patch
- github.com/FreshRSS/FreshRSS/commit/dbbae15a8458679db0f4540dacd… Patch
- github.com/FreshRSS/FreshRSS/commit/ee175dd6169a016fc898fac62d0… Patch
- github.com/FreshRSS/FreshRSS/pull/7878 Issue TrackingPatch
- github.com/FreshRSS/FreshRSS/pull/7971 Issue TrackingPatch
- github.com/FreshRSS/FreshRSS/pull/7979 Issue TrackingPatch
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 4.0
-
7.4
HIGH
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 1% percentile: 54 · as of 11 November 2026
- CWE
- CWE-20CWE-22
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.