Vendor
Checkmk vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 26 vulnerabilities in Checkmk: 6 in the last 7 days and 16 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-121374, was published on 11 November 2026. 6 vulnerabilities in the last four weeks, up 100% on the four before (3). 1 technology has a page of its own.
- Last 7 days
- 6
- Last 90 days
- 16
- Critical, all time
- 0
- Exploited in the wild
- 0
About Checkmk
Checkmk is an open-source IT monitoring platform for managing infrastructure, applications, and cloud environments.
Checkmk technologies
- Checkmk34
Latest Checkmk vulnerabilities
- CVE-2026-121374: Checkmk Kubernetes special agent argument injectioninfo
- CVE-2026-120495: Checkmk Robotmk path traversal in HTML loginfo
- CVE-2026-118965: Checkmk path traversal in remote site label synchronizationinfo
- CVE-2026-111573: Checkmk Windows agent privilege escalation via unprotected data directoryinfo
- CVE-2026-103682: Checkmk Jolokia agent password exposure in process listinfo
- CVE-2026-103674: Checkmk NetApp ONTAP password exposure in process listinfo
- CVE-2026-117611: Checkmk improper certificate validation in CA storeinfo
- CVE-2026-113461: Checkmk mk-oracle local privilege escalation via unsafe Oracle home loadinginfo
- CVE-2026-14452: Checkmk Setup search parameter open redirect and XSSinfoEPSS 0.4%
- CVE-2026-92882: Checkmk REST API credential exposure in host configurationinfoEPSS 0.4%
- CVE-2026-90990: Checkmk Livestatus injection in monitoring filter valuesinfoEPSS 0.4%
- CVE-2026-77021: Checkmk agent receiver memory exhaustion via compressed data amplificationinfoEPSS 0.4%
- CVE-2026-15937: Checkmk improper certificate validation in agent receiverinfoCVSS 5.3EPSS 0.1%
- CVE-2026-17548: Checkmk missing authorization in background job viewinginfoCVSS 5.3EPSS 0.2%
- CVE-2026-15576: Checkmk agent receiver mTLS authentication bypassinfoCVSS 6.9EPSS 0.4%
- CVE-2026-7485: Checkmk incorrect authorization in frozen BI aggregationsinfoCVSS 2.3EPSS 0.4%
- CVE-2026-33457: Checkmk Livestatus injection in prediction graph pagemediumCVSS 6.3
- CVE-2026-33456: Checkmk Livestatus injection in notification test modehighCVSS 7.6
- CVE-2026-33276: Checkmk stored XSS in Unified Search via host or service namesmediumCVSS 5.4EPSS 0.1%
- CVE-2026-20915: Checkmk stored XSS in Pending Changes sidebarmediumCVSS 5.4EPSS 0.1%
- CVE-2025-64998: Checkmk session hijacking via session signing secret exposurehighCVSS 7.2
- CVE-2025-65000: SSH private keys of the "Remote alert handlers (Linux)" rule were exposed in the rule page's HTML source in Checkmk <=…mediumCVSS 5.3EPSS 0.2%
- CVE-2025-64996: In Checkmk versions prior to 2.4.0p16, 2.3.0p41, and all versions of 2.2.0 and older, the mk_inotify plugin creates…mediumCVSS 4.4EPSS 0.1%
- CVE-2025-58122: Insufficient permission validation in Checkmk 2.4.0 before version 2.4.0p16 allows low-privileged users to modify…mediumCVSS 5.4EPSS 0.2%
- CVE-2025-58121: Insufficient permission validation on multiple REST API endpoints in Checkmk 2.2.0, 2.3.0, and 2.4.0 before version…mediumCVSS 5.4EPSS 0.2%
Most severe Checkmk vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2025-39663: Cross-Site Scripting (XSS) vulnerability in Checkmk's distributed monitoring allows a compromised remote site to…highCVSS 8.4EPSS 0.6%
- CVE-2026-33456: Checkmk Livestatus injection in notification test modehighCVSS 7.6
- CVE-2025-64998: Checkmk session hijacking via session signing secret exposurehighCVSS 7.2
- CVE-2026-33457: Checkmk Livestatus injection in prediction graph pagemediumCVSS 6.3
- CVE-2025-58121: Insufficient permission validation on multiple REST API endpoints in Checkmk 2.2.0, 2.3.0, and 2.4.0 before version…mediumCVSS 5.4EPSS 0.2%
- CVE-2025-58122: Insufficient permission validation in Checkmk 2.4.0 before version 2.4.0p16 allows low-privileged users to modify…mediumCVSS 5.4EPSS 0.2%
- CVE-2026-20915: Checkmk stored XSS in Pending Changes sidebarmediumCVSS 5.4EPSS 0.1%
- CVE-2026-33276: Checkmk stored XSS in Unified Search via host or service namesmediumCVSS 5.4EPSS 0.1%
- CVE-2025-65000: SSH private keys of the "Remote alert handlers (Linux)" rule were exposed in the rule page's HTML source in Checkmk <=…mediumCVSS 5.3EPSS 0.2%
- CVE-2025-64996: In Checkmk versions prior to 2.4.0p16, 2.3.0p41, and all versions of 2.2.0 and older, the mk_inotify plugin creates…mediumCVSS 4.4EPSS 0.1%
Vulnerabilities per week
6 vulnerabilities in the last four weeks, up 100% on the four before (3). The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 2 | 0 | |
| 24 Aug 2026 | 1 | 0 | |
| 31 Aug 2026 | 1 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 3 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 1 | 0 | |
| 19 Oct 2026 | 1 | 0 | |
| 26 Oct 2026 | 1 | 0 | |
| 2 Nov 2026 | 3 | 0 | |
| 9 Nov 2026 | 3 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Checkmk vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/vendors/checkmk)<a href="https://junglewise.ai/threats/vendors/checkmk"><img src="https://junglewise.ai/threats/vendors/checkmk/badge.svg" alt="Checkmk vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/checkmk.json, and this page as text at https://junglewise.ai/threats/vendors/checkmk.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Checkmk vulnerabilities", https://junglewise.ai/threats/vendors/checkmk, 12 November 2026.