CVE-2020-28919 Cross-site scripting in n/a
An authenticated attacker can inject arbitrary JavaScript via a view title in Checkmk, potentially leading to code execution or account takeover.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-28919?
CVE-2020-28919 is a medium-severity cross-site scripting vulnerability in Checkmk Checkmk, published on 15 Jan 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
A stored cross site scripting (XSS) vulnerability in Checkmk 1.6.0x prior to 1.6.0p19 allows an authenticated remote attacker to inject arbitrary JavaScript via a javascript: URL in a view title.
Weakness: CWE-79
Which versions are affected by CVE-2020-28919?
It affects 1 product.
Products include Checkmk Checkmk.
How do I fix CVE-2020-28919?
No fix has been published for CVE-2020-28919 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2020-28919 being exploited?
There is no known exploitation of CVE-2020-28919 in the wild and no public exploit code.
Other vulnerabilities in Checkmk Checkmk
- CVE-2025-39666 omd: Local privilege escalation when executing omd commands as root
- CVE-2024-8606 Fix 2FA bypass via RestAPI
- CVE-2022-46836 PHP code injection in watolib
- CVE-2025-32919 Privilege Escalation in Windows License plugin for Checkmk Windows Agent
- CVE-2024-28827 Privilege escalation in Windows agent
Sources
Also known as GHSA-wvr9-9j3f-xx78.