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  5. CVE-2026-55590

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

June 17, 2026 (updated August 14, 2026)

The getLoginRedirect() method contains a weakness to backslash bypasses allowing redirect targets with attacker controlled hostnames.

References

  • github.com/advisories/GHSA-hhpq-7wg4-36jm
  • github.com/cakephp/authentication/commit/1c1e29c7e8129cfbcae74558316ecd3ea50a8273
  • github.com/cakephp/authentication/commit/df28ea4e712f1e5bd0e42be4a3c5c750ca50764d
  • github.com/cakephp/authentication/commit/ee24bd48b9c3ef693dc9965de8f0cc8020a7052c
  • github.com/cakephp/authentication/pull/795
  • github.com/cakephp/authentication/pull/796
  • github.com/cakephp/authentication/pull/799
  • github.com/cakephp/authentication/releases/tag/2.11.1
  • github.com/cakephp/authentication/releases/tag/3.3.6
  • github.com/cakephp/authentication/releases/tag/4.1.1
  • github.com/cakephp/authentication/security/advisories/GHSA-hhpq-7wg4-36jm
  • nvd.nist.gov/vuln/detail/CVE-2026-55590

Code Behaviors & Features

Detect and mitigate CVE-2026-55590 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →

Affected versions

All versions before 2.11.1, all versions starting from 3.0.0 before 3.3.6, all versions starting from 4.0.0 before 4.1.1

Fixed versions

  • 2.11.1
  • 3.3.6
  • 4.1.1

Solution

Upgrade to versions 2.11.1, 3.3.6, 4.1.1 or above.

Impact 4.3 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Learn more about CVSS

Weakness

  • CWE-601: URL Redirection to Untrusted Site ('Open Redirect')

Source file

packagist/cakephp/authentication/CVE-2026-55590.yml

Spotted a mistake? Edit the file on GitLab.

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