CVE-2026-77337CakePHP: Potential Authentication bypass with CookieAuthenticator

Description

CakePHP Authentication is an authentication plugin for CakePHP that can also be used in PSR-7 based applications. Versions before 2.11.2, from 3.0.0 through 3.3.6, and from 4.0.0 through 4.2.0 allow authentication bypass and potential CPU or memory exhaustion when CookieAuthenticator uses unencrypted, forgeable legacy tokens. This issue is fixed in versions 2.11.2, 3.3.7, and 4.2.1.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://github.com/cakephp/authentication/security/advisories/GHSA-h7xh-9h2x-2m37
• https://github.com/cakephp/authentication/pull/806
• https://github.com/cakephp/authentication/pull/807
• https://github.com/cakephp/authentication/commit/c94d9a5380e7f4fdf38d338a9de2223a5b087159