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CVE-2026-8139

MEDIUM CVSS: 5.4 Published: 2026-05-21 Modified: 2026-07-23

Description

Concrete CMS 9.5.0 and below is vulnerable to Stored XSS via external-link page cvName because updateCollectionAliasExternal bypasses being sanitized. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.0 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N.  Thanks Yonatan Drori (Tenzai) for reporting.

Affected Platforms

Concretecms Concrete Cms

Weakness Type

CWE-79

References