CVE-2025-15055 SlimStat Analytics <= 5.3.4 - Unauthenticated Stored Cross-Site Scripting via 'notes/resource' Parameters
Unauthenticated attackers can inject scripts via parameters that execute when administrators view reports, potentially leading to account takeover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-15055?
CVE-2025-15055 is a high-severity cross-site scripting vulnerability in veronalabs SlimStat Analytics, published on 9 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The SlimStat Analytics plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'notes' and 'resource' parameters in all versions up to, and including, 5.3.4 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 an administrator accesses the Recent Custom Events report.
Weakness: CWE-79
Which versions are affected by CVE-2025-15055?
How do I fix CVE-2025-15055?
No fix has been published for CVE-2025-15055 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-2025-15055 being exploited?
There is no known exploitation of CVE-2025-15055 in the wild and no public exploit code.
Sources
Also known as GHSA-rx6q-58qj-7693.