CVE-2026-10551 Breeze Cache < 2.5.6 - Unauthenticated Stored XSS via Minify Library
An unauthenticated attacker can inject arbitrary HTML attributes into the final output via predictable minification hashes, leading to stored XSS.
- 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-2026-10551?
CVE-2026-10551 is a medium-severity cross-site scripting vulnerability in Unknown Breeze Cache, published on 13 Jul 2026. 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 Breeze Cache WordPress plugin before 2.5.6 is vulnerable to unauthenticated Stored Cross-Site Scripting (XSS) due to a predictable replacement hash used during the HTML minification process and abusing a regular expression. This allows an attacker to inject arbitrary HTML attributes in the final HTML output by anticipating the placeholder format.
Which versions are affected by CVE-2026-10551?
How do I fix CVE-2026-10551?
No fix has been published for CVE-2026-10551 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-2026-10551 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-10551 exists.
Sources
Also known as GHSA-m7gw-pmv8-8hf3.