PT-2026-22867 · Unknown · Concrete Cms

M3Dium · Published 2026-03-04 · Updated 2026-03-04 · CVE-2026-3242

Positive Technologies (AI Summary)

CVSS v3.1

4.8

Medium

Base vector

AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Concrete CMS versions prior to 9.4.8

Description A malicious administrator can inject stored cross-site scripting (XSS) through the Switch Language block. This allows an attacker to execute scripts in the context of another user's browser.

Recommendations Update to version 9.4.8 or later.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-3242

GHSA-W9QG-CHFH-G3Q9

Affected Products

Concrete Cms

References · 10

• https://github.com/concretecms/concretecms/pull/12826 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-3242 · Security Note
• https://osv.dev/vulnerability/GHSA-w9qg-chfh-g3q9 · Vendor Advisory
• https://documentation.concretecms.org/9-x/developers/introduction/version-history/948-release-notes · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-3242 · Vendor Advisory
• https://github.com/concretecms/concretecms · Note
• https://twitter.com/CVEarity/status/2029169210828702202 · Twitter Post
• https://t.me/CVEtracker/46276 · Telegram Post
• https://twitter.com/cyberbivash/status/2029061295886987314 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2029185322328740080 · Twitter Post