CVE-2026-10738 Cross-site scripting in jQuery Hover Footnotes
Authenticated attackers with author-level access can inject arbitrary scripts via footnote qualifiers, 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-2026-10738?
CVE-2026-10738 is a medium-severity cross-site scripting vulnerability in weaverlancegmailcom jQuery Hover Footnotes, published on 9 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The jQuery Hover Footnotes plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Footnote Qualifier ('{{...}}' Syntax) in all versions up to, and including, 1.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The attribute-breakout payload (e.g., a double-quote followed by an event handler) contains no angle brackets and therefore bypasses WordPress core's wp_kses_post() filtering, which only strips disallowed HTML tags rather than sanitizing attribute contexts.
Weakness: CWE-79
Which versions are affected by CVE-2026-10738?
How do I fix CVE-2026-10738?
No fix has been published for CVE-2026-10738 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-2026-10738 being exploited?
There is no known exploitation of CVE-2026-10738 in the wild and no public exploit code.
Sources
Also known as GHSA-46cx-5vwq-g5q3.