CVE-2023-6692 Cross-site scripting in Ultimate Blocks – 25+ Gutenberg Blocks for Block Editor
Authenticated attackers with contributor permissions can inject arbitrary scripts via the tab anchor metabox, leading to stored XSS execution on victim pages.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-6692?
CVE-2023-6692 is a medium-severity cross-site scripting vulnerability in ultimateblocks Ultimate Blocks – 25+ Gutenberg Blocks for Block Editor, published on 19 Jun 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Ultimate Blocks – WordPress Blocks Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's tab anchor metabox in all versions up to, and including, 3.0.8 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Weakness: CWE-79
Which versions are affected by CVE-2023-6692?
How do I fix CVE-2023-6692?
No fix has been published for CVE-2023-6692 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-2023-6692 being exploited?
There is no known exploitation of CVE-2023-6692 in the wild and no public exploit code.
Sources
Also known as GHSA-7q5m-576v-g3h4.