Detections
Analytics

SCA: security update for concrete5/concrete5 (GHSA-52pr-7vmf-2w7x)

high Tenable Cloud Security Plugin ID 444706

Description

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

 - Concrete CMS below 9.5.3 is vulnerable to PHP Object Injection via unserialize() calls in the Workflow,
 Form block, and File/Set components that lack the allowed_classes restriction. The Form block and File/Set
 sinks were addressed in 9.5.2; the Workflow component sinks were addressed in 9.5.3. An unauthenticated
 attacker may trigger arbitrary PHP object instantiation if a malicious serialized payload has been placed
 in the database. Thanks XananasX7 and Sanjorn Keeratirungsan (dizconnect) for independently reporting the
 original components, and sh4d0byss for reporting the Workflow component wasn't fixed in 9.5.2. The
 Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 8.4 with vector
 CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/ VC:H/VI:H/VA:H/SC:N/SI:N/SA:N. (CVE-2026-7888)

Solution

Update the concrete5/concrete5 library and its related packages to version 9.5.2 or later.

See Also

https://github.com/advisories/GHSA-52pr-7vmf-2w7x

Plugin Details

Severity: High

ID: 444706

Version: Revision 1.2

Type: Local

Family: SCA Checks

Published: 7/14/2026

Updated: 9/14/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.95

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2026-7888

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/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: 8.4

Threat Score: 5.7

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/3/2026

Vulnerability Publication Date: 6/3/2026

Reference Information

CVE: CVE-2026-7888

cwe: CWE-502