CVE-2026-41661

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Source
https://cve.org/CVERecord?id=CVE-2026-41661
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41661.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-41661
Aliases
Published
2026-05-07T02:59:34.649Z
Modified
2026-07-15T01:49:15.325324603Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
Summary
Admidio: Reflected XSS in msg_window.php via Square Bracket to HTML Tag Conversion
Details

Admidio is an open-source user management solution. Prior to version 5.0.9, an unauthenticated attacker can execute arbitrary JavaScript in any Admidio user's browser through a reflected XSS in system/msg_window.php. The endpoint passes user input through htmlspecialchars(), which does not encode square brackets. A subsequent call to Language::prepareTextPlaceholders() converts those brackets into HTML angle brackets, producing executable markup. This issue has been patched in version 5.0.9.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41661.json"
}
References

Affected packages

Git / github.com/admidio/admidio

Affected ranges

Type
GIT
Repo
https://github.com/admidio/admidio
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
d39915697e6e0be04d02d55a46c631f53013aea6
Database specific 
{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "5.0.9"
        }
    ]
}

Affected versions

3.*
3.0-Beta.1
3.0-Beta.3
v3.*
v3.0.6
v3.1.5
v3.2-Beta.1
Other
v34
v4.*
v4.0-Beta.1
v4.1-Beta.2
v4.3-Beta.1
v5.*
v5.0-Beta.1
v5.0-Beta.2
v5.0-Beta.3
v5.0.0
v5.0.1
v5.0.2
v5.0.3
v5.0.4
v5.0.5
v5.0.6
v5.0.7
v5.0.8

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41661.json"