CVE-2025-4054 Relevanssi <= 4.24.3 (Free) and <= 2.27.4 (Premium) - Unauthenticated Stored Cross-Site Scripting via Search Highlights
Unauthenticated attackers can inject arbitrary scripts via search highlights, leading to code execution or account takeover when users view search results.
- 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-2025-4054?
CVE-2025-4054 is a medium-severity cross-site scripting vulnerability in Relevanssi Premium, published on 7 May 2025. 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
The Relevanssi – A Better Search plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the highlights functionality in all versions up to, and including, 4.24.3 (Free) and <= 2.27.4 (Premium), due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page via the search results.
Weakness: CWE-79
Which versions are affected by CVE-2025-4054?
How do I fix CVE-2025-4054?
No fix has been published for CVE-2025-4054 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-2025-4054 being exploited?
There is no known exploitation of CVE-2025-4054 in the wild and no public exploit code.
Sources
Also known as GHSA-fhf5-p55m-mr5q.