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Vulnerability · Published Mar 9, 2026 · Assigned by GitHub_M

CVE-2025-68402FreshRSS has an authentication bypass due to truncated bcrypt hash [edge branch]

High 8.2

In plain English

A high-severity improper authentication in FreshRSS from FreshRSS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).

Severity (CVSS 4.0)8.2High
Exploit odds (30 days)0.3%top 76.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

FreshRSS is a free, self-hostable RSS aggregator. From 57e1a37 - 00f2f04, the lengths of the nonce was changed from 40 chars to 64. password_verify() is currently being called with a constructed string (SHA-256 nonce + part of a bcrypt hash) instead of the raw user password. Due to bcrypt’s 72-byte input truncation, this causes password verification to succeed even when the user enters an incorrect password. This vulnerability is fixed in 1.27.2-dev (476e57b). The issue was only present in the edge branch and never in a stable release.

Affected products (as reported)

VendorProductVersions
FreshRSS FreshRSS < 476e57b04646416e24e24c56133c9fadf9e52b95

Weakness: CWE-287 · Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

References