Description
FreshRSS is a free, self-hostable RSS aggregator. Prior to version 1.28.0, FreshRSS uses cryptographically weak random number generators (mt_rand() and uniqid()) to generate remember-me authentication tokens and challenge-response nonces. This allows attackers to predict valid session tokens, leading to account takeover through persistent session hijacking. The remember-me tokens provide permanent authentication and are the sole credential for "keep me logged in" functionality. This issue has been patched in version 1.28.0.
Affected products
freshrss: freshrss
References4
- github.com/FreshRSS/FreshRSS/security/advisories/GHSA-j9wc-gwc6… ExploitPatchVendor Advisory
- github.com/FreshRSS/FreshRSS/security/advisories/GHSA-j9wc-gwc6… ExploitPatchVendor Advisory
- github.com/FreshRSS/FreshRSS/commit/57e1a375cbd2db9741ff1916781… Patch
- github.com/FreshRSS/FreshRSS/pull/8061 Issue TrackingPatch
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 4.0
-
2.9
LOW
Score source: CNA
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/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: 47 · as of 11 November 2026
- CWE
- CWE-338
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.