Log in Start free

Vulnerability · Published Jul 9, 2026 · Assigned by GitHub_M

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

Medium 5.1

In plain English

A medium-severity open redirect in authentication from cakephp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)5.1Medium
Exploit odds (30 days)0.5%top 57.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Packagistcakephp/authentication3.3.6GHSA-hhpq-7wg4-36jm
Packagistcakephp/authentication4.1.1GHSA-hhpq-7wg4-36jm
Packagistcakephp/authentication2.11.1GHSA-hhpq-7wg4-36jm

Affected products (as reported)

VendorProductVersions
cakephp authentication < 2.11.1>= 3.0.0, < 3.3.6>= 4.0.0, < 4.1.1

Weakness: CWE-601 · Vector: 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

References