CVE-2026-15227

Summary: CVE-2026-15227 affects Checkmk prior to versions 2.5.0p10, 2.4.0p35, 2.3.0p49, and 2.2.0 (EOL). An authenticated user who lacks the "Edit foreign Reports" permission can modify reports owned by other users due to missing authorization. What’s affected: Checkmk installations running the l...

CVE-2026-8593

Improper permission enforcement in Checkmk versions 2.5.0 before 2.5.0p9, 2.4.0 before 2.4.0p34, 2.3.0 before 2.3.0p49, and 2.2.0 EOL allows users without permissions to view and modify BI packs and rules...

CVE-2026-14852 mk_sap_hana: Privilege escalation via crafted sapstartsrv process name

Privilege escalation in Checkmk versions 2.5.0 before 2.5.0p9, 2.4.0 before 2.4.0p34, 2.3.0 before 2.3.0p49, and 2.2.0 EOL allows a local unprivileged user to execute arbitrary commands as root by starting a process crafted to look like a SAP HANA instance. Without an explicit database...

Linux Distros Unpatched Vulnerability : CVE-2026-8833

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Improper neutralization of HTML-encoded characters in the URL validation function in Checkmk 2.5.0p5, 2.4.0p31, 2.3.0p48, and all 2.2.0 versions allows an...

Linux Distros Unpatched Vulnerability : CVE-2026-7765

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Incorrect authorization in the User Messages dashboard widget in Checkmk 2.5.0p5 causes the message- fetching endpoints to return the dashboard creator's messag...

CVE-2026-8078

Stored cross-site scripting in the global settings change log in Checkmk 2.5.0p5, 2.4.0p31, 2.3.0p48, and all 2.2.0 versions allows an administrator who can change global settings to store malicious HTML or JavaScript in changelog messages that executes in other users' browsers when they view the...

CVE-2026-8833

Improper neutralization of HTML-encoded characters in the URL validation function in Checkmk 2.5.0p5, 2.4.0p31, 2.3.0p48, and all 2.2.0 versions allows an authenticated user to bypass URL validation and inject malicious URLs such as javascript: URIs, resulting in cross-site scripting when another...

UBUNTU-CVE-2026-8833

Improper neutralization of HTML-encoded characters in the URL validation function in Checkmk 2.5.0p5, 2.4.0p31, 2.3.0p48, and all 2.2.0 versions allows an authenticated user to bypass URL validation and inject malicious URLs such as javascript: URIs, resulting in cross-site scripting when another...

EUVD-2026-35053

Improper neutralization of HTML-encoded characters in the URL validation function in Checkmk 2.5.0p5, 2.4.0p31, 2.3.0p48, and all 2.2.0 versions allows an authenticated user to bypass URL validation and inject malicious URLs such as javascript: URIs, resulting in cross-site scripting when another...

CVE-2026-8833

Improper neutralization of HTML-encoded characters in the URL validation function in Checkmk 2.5.0p5, 2.4.0p31, 2.3.0p48, and all 2.2.0 versions allows an authenticated user to bypass URL validation and inject malicious URLs such as javascript: URIs, resulting in cross-site scripting when another...

CVE-2026-8833 XSS in urls

Improper neutralization of HTML-encoded characters in the URL validation function in Checkmk 2.5.0p5, 2.4.0p31, 2.3.0p48, and all 2.2.0 versions allows an authenticated user to bypass URL validation and inject malicious URLs such as javascript: URIs, resulting in cross-site scripting when another...

CVE-2026-7765 User Messages widget leaked issuer messages on shared dashboards

Incorrect authorization in the User Messages dashboard widget in Checkmk 2.5.0p5 causes the message-fetching endpoints to return the dashboard creator's messages rather than the viewer's, allowing an attacker who knows a valid public dashboard share token to read the issuer's personal messages by...

PT-2026-47286

Stored cross-site scripting in the global settings change log in Checkmk 2.5.0p5, 2.4.0p31, 2.3.0p48, and all 2.2.0 versions allows an administrator who can change global settings to store malicious HTML or JavaScript in changelog messages that executes in other users' browsers when they view the...

PT-2026-47287

Improper neutralization of HTML-encoded characters in the URL validation function in Checkmk 2.5.0p5, 2.4.0p31, 2.3.0p48, and all 2.2.0 versions allows an authenticated user to bypass URL validation and inject malicious URLs such as javascript: URIs, resulting in cross-site scripting when another...

Checkmk 跨站脚本漏洞

Checkmk is an IT monitoring platform developed by Checkmk Corporation. Versions of Checkmk prior to 2.5.0p5, 2.4.0p31, 2.3.0p48, and all 2.2.0 versions contained a cross-site scripting vulnerability. This vulnerability stemmed from improper decoding of HTML-encoded characters in the URL validatio...

Checkmk 跨站脚本漏洞

Checkmk is an IT monitoring platform developed by Checkmk Corporation. Versions prior to Checkmk 2.5.0p5, 2.4.0p31, 2.3.0p48, and all 2.2.0 versions contain a cross-site scripting vulnerability. This vulnerability stems from the service discovery active check’s output, which contains a stored...

CVE-2026-33455

Livestatus injection in the monitoring quicksearch in Checkmk 2.5.0b4 allows an authenticated attacker to inject livestatus commands via the search query due to insufficient input sanitization in search filter plugins...

Linux Distros Unpatched Vulnerability : CVE-2025-39666

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Local privilege escalation in Checkmk 2.2.0 EOL, Checkmk 2.3.0 before 2.3.0p46, Checkmk 2.4.0 before 2.4.0p25, and Checkmk 2.5.0 beta before 2.5.0b3 allows a si...

Linux Distros Unpatched Vulnerability : CVE-2026-33456

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Livestatus injection in the notification test mode in Checkmk 2.5.0b4 and 2.4.0p26 allows an authenticated user with access to the notification test page to...

Linux Distros Unpatched Vulnerability : CVE-2026-33457

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Livestatus injection in the prediction graph page in Checkmk 2.5.0b4, 2.4.0p26, and 2.3.0p47 allows an authenticated user to inject arbitrary Livestatus command...