cve.bz

CVE-2026-7890

2.1 lowEPSS 0.2%

Low (2.1) in concretecms concrete cms. EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

2.1 low
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

CVSS 3.1

6.4 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
EPSS
0.2% chance of exploitation in the next 30 days; higher than 4% of CVEs (scores of 2026-10-31)
CWE
CWE-918
Published
Modified
Record from
the NVD, synced

Affected

References

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