Open Redirect in Cakephp Authentication
CVE-2026-55590
CakePHP Authentication is an authentication plugin for CakePHP that can also be used in PSR-7 based applications. Prior to 2.11.1, 3.3.6, and 4.1.1, the getLoginRedirect() method contains a weakness to backslash bypasses that allows redirect targets with attacker-controlled hostnames through the redirect query string parameter. This issue is fixed in versions 2.11.1, 3.3.6, and 4.1.1.
Vulnerability class: Open Redirect
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (40.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Cakephp Authentication — versions < 2.11.1, >= 3.0.0, < 3.3.6, >= 4.0.0, < 4.1.1
- Cakephp
Weakness classification (CWE)
References
- github.com/cakephp/authentication/commit/1c1e29c7e8129cfbcae74558316ecd3ea50a82… (Patch)
- github.com/cakephp/authentication/commit/df28ea4e712f1e5bd0e42be4a3c5c750ca5076… (Patch)
- github.com/cakephp/authentication/commit/ee24bd48b9c3ef693dc9965de8f0cc8020a705… (Patch)
- github.com/cakephp/authentication/pull/795 (Patch, Issue Tracking)
- github.com/cakephp/authentication/pull/796 (Patch, Issue Tracking)
- github.com/cakephp/authentication/pull/799 (Patch, Issue Tracking)
- github.com/cakephp/authentication/releases/tag/2.11.1 (Release Notes)
- github.com/cakephp/authentication/releases/tag/3.3.6 (Release Notes)
- github.com/cakephp/authentication/releases/tag/4.1.1 (Release Notes)
- github.com/cakephp/authentication/security/advisories/GHSA-hhpq-7wg4-36jm (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-55590?
- CVE-2026-55590 is a medium-severity vulnerability in Cakephp Authentication, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2026-07-09.
- How severe is CVE-2026-55590?
- Medium severity. CVSS v3 base score is 6.1 out of 10.