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Vulnerability record · CVE-2026-77337 · published 24 August 2026

CVE-2026-77337: Authentication bypass by spoofing vulnerability

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.

9.1 CVSS 4.0 Critical EPSS 0.70% · top 48.9% CWE-290 · Authentication bypass by spoofingCWE-770 · Allocation without limits Deferred
9.1CVSS 4.0 base score
0.70%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
9 Sep 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

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

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Source: NIST National Vulnerability Database (record CVE-2026-77337), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.