Medium 5.1Published Jul 9, 2026

CVE-2026-55590CakePHP: Open redirect weakness via backslash bypass

Updated under an hour ago (Oct 28, 2026, 5:40 AM ET)

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It affects cakephp authentication and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for cakephp authentication

Exploited in the last 30 days

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.

CVSS: 5.1 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Weakness (CWE): CWE-601
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Jul 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

cakephp authentication cakephp:authentication (from the name)	before 2.11.1; from 3.0.0, < 3.3.6; from 4.0.0, < 4.1.1	CNA record
cakephp cakephp cakephp:cakephp	before 2.11.1; from 3.0.0 before 3.3.6; from 4.0.0 before 4.1.1	NVD

References

References

https://github.com/cakephp/authentication/security/advisories/GHSA-hhpq-7wg4-36jm	x-refsource-confirm, vendor-advisory
https://github.com/cakephp/authentication/pull/795	x-refsource-misc, issue-tracking, patch
https://github.com/cakephp/authentication/pull/796	x-refsource-misc, issue-tracking, patch
https://github.com/cakephp/authentication/pull/799	x-refsource-misc, issue-tracking, patch
https://github.com/cakephp/authentication/commit/1c1e29c7e8129cfbcae74558316ecd3ea50a8273	x-refsource-misc, patch
https://github.com/cakephp/authentication/commit/df28ea4e712f1e5bd0e42be4a3c5c750ca50764d	x-refsource-misc, patch
https://github.com/cakephp/authentication/commit/ee24bd48b9c3ef693dc9965de8f0cc8020a7052c	x-refsource-misc, patch
https://github.com/cakephp/authentication/releases/tag/2.11.1	x-refsource-misc, release-notes
https://github.com/cakephp/authentication/releases/tag/3.3.6	x-refsource-misc, release-notes
https://github.com/cakephp/authentication/releases/tag/4.1.1	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.