High severity · published Oct 16, 2026
CVE-2026-14452
Open redirect and XSS via reset_url parameter
8.6
CVSS
0.3%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CH
Checkmk · Checkmk GmbH
2.5.0 before 2.5.0p15; 2.4.0 before 2.4.0p38; 2.3.0 before 2.3.0p51; 2.2.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-14452
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-14452
checkmk.com
https://checkmk.com/werk/22314
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