CVE-2026-10077 YOOtheme Pro < 5.0.35 - Author+ Stored XSS via UIkit Data Attributes
Authors can inject malicious scripts via UIkit attributes in YOOtheme Pro, leading to stored XSS execution in other users' browsers.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-10077?
CVE-2026-10077 is a medium-severity cross-site scripting vulnerability in Unknown yootheme, published on 2 Jul 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
The yootheme WordPress theme before 5.0.35 does not prevent its bundled front-end framework from treating certain HTML attributes, which are permitted by wp_kses_post(), as markup, allowing users with the Author role to perform Stored Cross-Site Scripting attacks that execute in the browser of any user who views the affected post.
Which versions are affected by CVE-2026-10077?
How do I fix CVE-2026-10077?
No fix has been published for CVE-2026-10077 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-2026-10077 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-10077 exists.
Sources
Also known as GHSA-76v2-c9r8-5q7q.