CVE-2026-9833 Tag Groups < 2.2.0 - Reflected XSS via 'tag_groups_task' Parameter
Unauthenticated attackers can execute arbitrary JavaScript in the browser of logged-in editors via a crafted link, potentially leading to account takeover.
- 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-2026-9833?
CVE-2026-9833 is a high-severity cross-site scripting vulnerability in Unknown Tag Groups is the Advanced Way to Display Your Taxonomy Terms, published on 20 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 Tag Groups is the Advanced Way to Display Your Taxonomy Terms WordPress plugin before 2.2.0 does not properly escape one of its AJAX parameters before reflecting it in the response body served with an HTML content type, allowing unauthenticated attackers to execute arbitrary JavaScript in the browser of a logged-in user with `edit_pages` capability (Editor or higher) who is tricked into following a crafted link.
Weakness: CWE-79
Which versions are affected by CVE-2026-9833?
How do I fix CVE-2026-9833?
No fix has been published for CVE-2026-9833 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-2026-9833 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-9833 exists.
Public exploit code: 1 Nuclei template and 1 proofs of concept on GitHub.
Sources
Also known as GHSA-mcx6-9qf4-cx6p.