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CVE-2026-18424 Concrete CMS 9.0.0 to 9.5.2 is vulnerable to SSRF protection bypass in remote file import when multiple URLs share a host but use different ports

🗓️ 15 Sep 2026 19:49:48Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 4 Views

SSRF bypass in Concrete CMS 9.0.0-9.5.2 via cross-port DNS pin reuse in file import.

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18 Sep 2026 03:30Current
5.8Medium risk
Vulners AI Score5.8
CVSS 42.1
4