CVE-2026-3241

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Source
https://cve.org/CVERecord?id=CVE-2026-3241
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3241.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-3241
Aliases
Published
2026-03-04T02:12:51.092Z
Modified
2026-07-08T07:32:32.159930058Z
Severity
  • 4.8 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Concrete CMS below version 9.4.8 is vulnerable to a stored cross-site scripting (XSS) in the "Legacy Form" block.
Details

In Concrete CMS below version 9.4.8, a stored cross-site scripting (XSS) vulnerability exists in the "Legacy Form" block. An authenticated user with permissions to create or edit forms (e.g., a rogue administrator) can inject a persistent JavaScript payload into the options of a multiple-choice question (Checkbox List, Radio Buttons, or Select Box). This payload is then executed in the browser of any user who views the page containing the form. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 4.8 with vector CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks M3dium for reporting.

Database specific 
{
    "cna_assigner": "ConcreteCMS",
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3241.json"
}
References

Affected packages

Git / github.com/concretecms/concretecms

Affected ranges

Type
GIT
Repo
https://github.com/concretecms/concretecms
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
455229307c0cb421fa6ef7e9aa9f74f0863c4788
Database specific 
{
    "extracted_events": [
        {
            "introduced": "5"
        },
        {
            "fixed": "9.4.8"
        },
        {
            "introduced": "0"
        }
    ],
    "cpe": "cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:*",
    "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
9.4.5
9.4.6
9.4.7

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3241.json"