CVE-2026-9756 Cross-site scripting in GenerateBlocks
Authenticated contributors can inject JavaScript via the Headline Block link attribute, leading to script execution and potential account takeover when administrators click the link.
- 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-2026-9756?
CVE-2026-9756 is a medium-severity cross-site scripting vulnerability in edge22 GenerateBlocks, published on 3 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The GenerateBlocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Headline Block 'linkMetaFieldType' Dynamic Link Attribute in all versions up to, and including, 2.2.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. A contributor-level attacker can store a JavaScript payload in their own profile description (allowlisted by get_safe_user_meta_keys()) and prepend 'javascript:' via the linkMetaFieldType attribute, creating a fully attacker-controlled href that executes when any user, including an administrator, clicks the rendered headline link.
Weakness: CWE-79
Which versions are affected by CVE-2026-9756?
How do I fix CVE-2026-9756?
No fix has been published for CVE-2026-9756 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-2026-9756 being exploited?
There is no known exploitation of CVE-2026-9756 in the wild and no public exploit code.
Sources
Also known as GHSA-735g-4w2p-c7c6.