CVE-2026-76558 WP Import Export Lite < 3.9.33 - Contributor+ Stored DOM XSS via Custom Field Names
Contributors can inject malicious scripts via custom field names, leading to stored XSS attacks against administrators viewing the plugin's admin screens.
- 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-2026-76558?
CVE-2026-76558 is a medium-severity cross-site scripting vulnerability in Unknown WP Import Export Lite, published on 16 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
The WP Import Export Lite WordPress plugin before 3.9.33 does not escape custom field names retrieved from the database before inserting them into the DOM of one of its administration screens, allowing users with a role as low as contributor to perform Stored XSS attacks which will trigger in the browser of a high privileged user, such as an administrator, viewing that screen.
Weakness: CWE-79
Which versions are affected by CVE-2026-76558?
How do I fix CVE-2026-76558?
No fix has been published for CVE-2026-76558 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-2026-76558 being exploited?
There is no known exploitation of CVE-2026-76558 in the wild and no public exploit code.
Sources
Also known as GHSA-rrjc-9rg9-cm6c.