CVE-2026-7634 SlimStat Analytics <= 5.4.11 - Unauthenticated Stored Cross-Site Scripting via User-Agent Header
Unauthenticated attackers can inject scripts via User-Agent headers in SlimStat Analytics, requiring a specific admin setting to be enabled.
- 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-2026-7634?
CVE-2026-7634 is a high-severity cross-site scripting vulnerability in veronalabs SlimStat Analytics, published on 28 May 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 'User-Agent' header in all versions up to, and including, 5.4.11 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. The show_complete_user_agent_tooltip setting must be explicitly enabled by an administrator (disabled by default) for the stored payload to be rendered and executed.
Weakness: CWE-79
Which versions are affected by CVE-2026-7634?
How do I fix CVE-2026-7634?
No fix has been published for CVE-2026-7634 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-2026-7634 being exploited?
There is no known exploitation of CVE-2026-7634 in the wild and no public exploit code.
Sources
Also known as GHSA-xvg3-935w-4mv9.