GHSA-gj26-w59c-29mf

Source

https://github.com/advisories/GHSA-gj26-w59c-29mf

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-gj26-w59c-29mf/GHSA-gj26-w59c-29mf.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-gj26-w59c-29mf

Aliases

CVE-2026-3452

Published

2026-03-04T03:31:34Z

Modified

2026-03-04T21:56:20Z

Severity

8.9 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H CVSS Calculator

Summary

Concrete CMS vulnerable to Remote Code Execution by stored PHP object injection

Details

Concrete CMS below version 9.4.8 is vulnerable to Remote Code Execution by stored PHP object injection into the Express Entry List block via the columns parameter. An authenticated administrator can store attacker-controlled serialized data in block configuration fields that are later passed to unserialize() without class restrictions or integrity checks.

The Concrete CMS security team thanks YJK ( @YJK0805 https://hackerone.com/yjk0805 ) of ZUSO ART https://zuso.ai/ for reporting.

Database specific

{
    "cwe_ids":  [
        "CWE-502"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-03-04T21:32:21Z",
    "nvd_published_at":  "2026-03-04T02:15:54Z",
    "severity":  "HIGH"
}

References

Affected packages

Packagist / concrete5/concrete5

Package

Name: concrete5/concrete5
Purl: pkg:composer/concrete5/concrete5

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

9.4.8

Affected versions

8.*

8.0

8.0.1

8.0.2

8.0.3

8.1.0

8.2.0RC2

8.2.0

8.2.1

8.3.0

8.3.1

8.3.2

8.4.0RC3

8.4.0RC4

8.4.0

8.4.1

8.4.2

8.4.3

8.4.4

8.4.5

8.5.0RC1

8.5.0RC2

8.5.0

8.5.1

8.5.2

8.5.3

8.5.4

8.5.5

8.5.6RC1

8.5.6

8.5.7

8.5.8

8.5.9

8.5.10

8.5.11

8.5.12

8.5.13

8.5.14

8.5.15

8.5.16

8.5.17

8.5.18

8.5.19

8.5.20

8.5.21

9.*

9.0.0RC1

9.0.0RC3

9.0.0RC4

9.0.0

9.0.1

9.0.2

9.1.0

9.1.1

9.1.2

9.1.3

9.2.0RC2

9.2.0

9.2.1

9.2.2

9.2.3

9.2.4

9.2.5

9.2.6

9.2.7

9.2.8

9.2.9

9.3.0

9.3.1

9.3.2

9.3.3

9.3.4

9.3.5

9.3.6

9.3.7

9.3.8

9.3.9

9.4.0RC1

9.4.0RC2

9.4.0

9.4.1

9.4.2

9.4.3

9.4.4

9.4.5

9.4.6

9.4.7

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-gj26-w59c-29mf/GHSA-gj26-w59c-29mf.json"