Detections
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SCA: security update for concrete5/concrete5 (GHSA-q9fm-mpg8-8jqm)

low Tenable Cloud Security Plugin ID 444118

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Concrete CMS version 9.0 to 9.5.0 is vulnerable to Stored XSS via page name in the Atomik theme. A rogue
 editor can inject arbitrary JavaScript that executes in the context of any authenticated user visiting the
 affected account pages. This can lead to session hijacking, credential theft, malicious actions performed
 on behalf of users, and potential privilege escalation. The Concrete CMS security team gave this
 vulnerability a CVSS v.4.0 score of 2.1 with vector
 CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Yonatan Drori (Tenzai) for
 reporting. (CVE-2026-8353)

Solution

Update the concrete5/concrete5 library and its related packages to version 9.5.1 or later.

See Also

https://github.com/advisories/GHSA-q9fm-mpg8-8jqm

Plugin Details

Severity: Low

ID: 444118

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 6/30/2026

Updated: 6/30/2026

Risk Information

VPR

Risk Factor: Low

Score: 3.8

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 3.5

Vector: CVSS2#AV:N/AC:L/Au:M/C:P/I:P/A:N

CVSS Score Source: CVE-2026-8353

CVSS v3

Risk Factor: Medium

Base Score: 4.8

Temporal Score: 4.2

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Low

Base Score: 2.1

Threat Score: 0.5

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 5/26/2026

Vulnerability Publication Date: 5/22/2026

Reference Information

CVE: CVE-2026-8353

cwe: CWE-79