CVE-2024-3021 Mhr Post Ticker <= 1.1 - Authenticated (Admin+) Stored Cross-Site Scripting
Administrators can inject arbitrary scripts via the Header Title field in the Mhr Post Ticker WordPress plugin, affecting multi-site or specific configurations.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-3021?
CVE-2024-3021 is a medium-severity cross-site scripting vulnerability in mdhadid Mhr Post Ticker, published on 2 May 2024. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
The Mhr Post Ticker plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Header Title value in all versions up to, and including, 1.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Weakness: CWE-79
Which versions are affected by CVE-2024-3021?
How do I fix CVE-2024-3021?
No fix has been published for CVE-2024-3021 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-2024-3021 being exploited?
There is no known exploitation of CVE-2024-3021 in the wild and no public exploit code.
Sources
Also known as GHSA-676w-9qh2-p2wm.