Description
Improper validation of the reset_url parameter of the Setup in-page search in Checkmk <2.5.0p15, <2.4.0p38, <2.3.0p51 and 2.2.0 (EOL) allows an attacker to execute arbitrary script in the session of an authenticated user with Setup access, or to redirect that user to an arbitrary external site, by tricking the user into opening a crafted URL and clicking the Reset button or submitting an empty search.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Checkmk | Checkmk | 2.5.0 – < 2.5.0p15, 2.4.0 – < 2.4.0p38, 2.3.0 – < 2.3.0p51, 2.2.0 | 2.5.0p15 |
Advisories 1
- WID-SEC-2026-3746 Checkmk: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 18, 2026
References
- https://checkmk.com/werk/22314 vendor-advisory