MEDIUM 6.0 NVD

CVE-2026-68528

Concrete CMS RSS Displayer block below version 9.5.3 rendered remote feed item titles without HTML escaping, resulting in stored cross-site scripting. An attac

Concrete CMS RSS Displayer block below version 9.5.3 rendered remote feed item titles without HTML escaping, resulting in stored cross-site scripting. An attacker able to control a title in a syndicated feed could execute script in the site origin for any visitor to the affected page, including administrators, without holding an account on that site. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 6.0 with vector CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks riodrwn for reporting.

References

https://documentation.concretecms.org/developers/introduction/version-history/953-release-

Published: 2026-09-11 · Source: NVD · Feed updated: 2026-09-11

This medium severity vulnerability with a CVSS score of 6.0 was published on 2026-09-11 via NVD.

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