SEPTEMBER 17, 2026
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Case File

CVE-2026-91819

MEDIUM · CVSS 6.9 EPSS 0.16% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-15 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

Affected versions of MISP utilize CakePHP's request-method override processing, which can inadvertently disable CSRF and form-security validation when an override method like GET is used. This vulnerability allows attackers to bypass critical security checks, potentially leading to unauthorized access or manipulation of data. Organizations using MISP versions 2.5.45 or earlier should prioritize patching this issue to safeguard against potential exploitation.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-91819
Severity
MEDIUM
CVSS
6.9
EPSS
0.16%

Original NVD Description

Affected versions of MISP rely on CakePHP request-method override processing in a way that can disable CSRF and form-security validation. CakePHP honors a _method field or X-HTTP-Method-Override header by rewriting the effective request method. For override values outside the normal write verbs POST, PUT, PATCH, and DELETE, CakePHP also clears the parsed request body. MISP’s security component then determines whether to perform _validatePost() and _validateCsrf() based on whether request data remains. With a value such as: _method=GET the body becomes empty before those checks run, so both protections are skipped. A cross-site form containing only that override can therefore reach actions whose parameters are taken from the URL rather than the request body Version affected: ≤2.5.45