Detections
Analytics

SCA: security update for concrete5/concrete5 (GHSA-jr5g-qv3g-rxxx)

high Tenable Self-Hosted Container Security Plugin ID 443887

Description

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

 - Concrete CMS 9.5.0 and below does not validate a CSRF token before processing requests to
 /dashboard/extend/update/do_update/<pkgHandle>. The do_update() method in
 concrete/controllers/single_page/dashboard/extend/update.php checks only canInstallPackages() before
 executing upgradeCoreData() and upgrade() on the named package's controller. Because the endpoint is a
 state-changing GET route with no token enforcement, an attacker can force an authenticated administrator
 to trigger a package upgrade via a single cross-site navigation.In order to be vulnerable, the victim must
 be passing canInstallPackages() and and a target package must already be already installed. The Concrete
 CMS security team gave this vulnerability a CVSS v.4.0 score of 7.5 with vector
 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N. Thanks https://github.com/maru1009 for
 reporting. (CVE-2026-8417)

Solution

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

See Also

https://github.com/advisories/GHSA-jr5g-qv3g-rxxx

Plugin Details

Severity: High

ID: 443887

Version: Revision 1.2

Type: Local

Family: SCA Checks

Published: 6/24/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.88

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-8417

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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

CVSS v4

Risk Factor: High

Base Score: 7.5

Threat Score: 4.8

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 5/21/2026

Vulnerability Publication Date: 5/21/2026

Reference Information

CVE: CVE-2026-8417

cwe: CWE-352