# CVE-2026-94379: MISP HTTP method validation bypass in login function

Source: https://junglewise.ai/threats/cve-2026-94379-the-login-function-in-misp-s-userscontroller-php-contained  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-21. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-94379 · Severity: info · Published 2026-09-21

MISP, an open-source threat intelligence platform, contains a flaw in its login function that allows attackers to bypass brute-force protection and multi-factor authentication by using non-standard HTTP methods. An unauthenticated attacker could exploit this to make unlimited login attempts without rate-limiting or two-factor authentication verification, potentially gaining unauthorized access to the system and its sensitive threat intelligence data.

Technologies: [Misp](https://junglewise.ai/threats/technologies/misp). Vendors: [Misp](https://junglewise.ai/threats/vendors/misp).

## Quick answers

**Is CVE-2026-94379 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-94379 being exploited in the wild.

**How severe is CVE-2026-94379?** Informational severity, published 21 September 2026.

**Which products and versions are affected?** Misp before 2.5.47.

**Is there a fix for CVE-2026-94379?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-94379 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-94379?** Check whether you run Misp at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The UsersController.php login() function uses an allowlist approach to validate HTTP methods, checking only for POST and PUT before enforcing brute-force blocklisting, OTP verification, and login-failure logging. An attacker can circumvent all three security controls by sending login requests with alternative HTTP methods (GET, DELETE, etc.), bypassing rate-limiting, 2FA, and audit trails. A patch adjusting the HTTP method validation has been published in commit ef4dc19.

## Affected products

- MISP MISP before 2.5.47

## Timeline

- 2026-09-21: disclosed

## References

- [https://github.com/MISP/MISP/commit/ef4dc19c6](https://github.com/MISP/MISP/commit/ef4dc19c6)

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