CVE-2024-38857 Reflected links in visuals facilitate phishing attacks
Attackers can craft malicious links in Checkmk visuals to facilitate phishing attacks by exploiting improper input neutralization.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2024-38857?
CVE-2024-38857 is a medium-severity cross-site scripting vulnerability in Checkmk Checkmk, published on 2 Jul 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Improper neutralization of input in Checkmk before versions 2.3.0p8, 2.2.0p28, 2.1.0p45, and 2.0.0 (EOL) allows attackers to craft malicious links that can facilitate phishing attacks.
Weakness: CWE-79
Which versions are affected by CVE-2024-38857?
It affects 1 product.
Products include Checkmk Checkmk.
How do I fix CVE-2024-38857?
No fix has been published for CVE-2024-38857 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-2024-38857 being exploited?
There is no known exploitation of CVE-2024-38857 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-2wgx-wf8j-j28h, UBUNTU-CVE-2024-38857.