CVE-2026-81912

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Source

https://cve.org/CVERecord?id=CVE-2026-81912

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-81912.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-81912

Published

2026-09-11T19:27:49Z

Modified

2026-09-26T03:47:43Z

Severity

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

Summary

Concrete CMS before 9.5.3 is vulnerable to Cross-Site Request Forgery in the Move Multiple Groups feature

Details

Concrete CMS before 9.5.3 is vulnerable to Cross-Site Request Forgery in the Move Multiple Groups feature. The dashboard/users/groups/bulkupdate/confirm() endpoint moved the selected group tree nodes without validating an action token, so a state-changing group move could be processed for an authenticated user who did not initiate it. Because relocating a group under a new parent causes that group's members to inherit the parent's permissions, a forged move can change effective authorization. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 5.7 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N. Thanks riodrwn for reporting.

Database specific

{
    "cna_assigner":  "ConcreteCMS",
    "cwe_ids":  [
        "CWE-352"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81912.json"
}

References

Affected packages

Git / github.com/concretecms/concretecms

Affected ranges

Type

GIT

Repo

https://github.com/concretecms/concretecms

Events

Introduced

Fixed

66d3f3d614e26e4b7955b967fed133a8acdb6820

Database specific

Show details

{
    "cpe":  "cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "5.0.0"
        },
        {
            "last_affected":  "9.5.2"
        },
        {
            "introduced":  "0"
        },
        {
            "fixed":  "9.5.4"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Affected versions

5.*

5.7.0

5.7.0.1

5.7.0.3

5.7.0.4

5.7.1

5.7.2

5.7.2.1

5.7.3

5.7.3.1

5.7.4.1

5.7.5.2

5.7.5.5

5.7.5.6

5.7.5.7

8.*

8.1.0

8.2.0

8.2.0RC2

8.2.1

8.3.1

8.4.1

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

9.4.0

9.4.0RC1

9.4.0RC2

9.4.1

9.4.2

9.4.3

9.4.4

9.5.0

9.5.0RC1

9.5.0RC2

9.5.1

9.5.2

9.5.3

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-81912.json"