CakePHP Authentication: Open redirect weakness via backslash bypass
Impact
ThegetLoginRedirect() method contains a weakness to backslash bypasses allowing redirect targets with attacker controlled hostnames.CVE-2026-55590
MEDIUMPre-NVD 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: —CVSS: —Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- —
- EG Score
- 0.0(none)
- EPSS
- —
- KEV
- Not listed
Published
June 17, 2026
Last Modified
June 17, 2026
Vendor Advisories for CVE-2026-55590(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
Packagist(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| cakephp/authentication | 4.0.0, 4.0.1, 4.1.0 | 4.1.1 | — |
Data Freshness Timeline
(refreshed 0× in last 7d / 1× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-06-17 19:06 UTCEG score recompute
Frequently asked(3)
What is CVE-2026-55590?
CVE-2026-55590 is a medium vulnerability published on June 17, 2026. CakePHP Authentication: Open redirect weakness via backslash bypass Impact The getLoginRedirect() method contains a weakness to backslash bypasses allowing redirect targets with attacker controlled hostnames. Patches 3.3.6 and 4.1.1 contain a fix for this issue. Workarounds If you are unable to…
When was CVE-2026-55590 disclosed?
CVE-2026-55590 was first published in the National Vulnerability Database on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
How do I remediate CVE-2026-55590?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55590, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-55590
Is Your Infrastructure Affected by CVE-2026-55590?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.