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CVE-2026-7890

Concrete CMS 9.5.0 is vulnerable to SSRF via RSS Displayer Block PUBLISHED

Description (CNA)

In Concrete CMS 9.5.0 and below, the RSS Displayer block accepts a feed URL from any page editor and fetches it server-side without validation enabling redirect-to-internal bypasses.  The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.1 with a vector CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:L/SI:N/SA:N.

Affected (CNA)

Vendor / productVersions
Concrete CMS / Concrete CMSaffected 5.0 through 9.5.0

CWE

CWE-918

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.