What is CVE-2026-41661?

CVE-2026-41661 is a medium-severity vulnerability in Admidio, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-05-07.

How severe is CVE-2026-41661?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Admidio

CVE-2026-41661

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 us…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.001 (19.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Admidio — versions < 5.0.9

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

https://github.com/Admidio/admidio/releases/tag/v5.0.9 (x_refsource_MISC)
https://github.com/Admidio/admidio/security/advisories/GHSA-gq27-fc8w-vcmp (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-41661?: CVE-2026-41661 is a medium-severity vulnerability in Admidio, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-05-07.
How severe is CVE-2026-41661?: Medium severity. CVSS v3 base score is 6.1 out of 10.