CVE-2026-84818 WordPress Open User Map plugin <= 1.4.50 - Cross Site Scripting (XSS) vulnerability

Q: What is CVE-2026-84818?

CVE-2026-84818 is a high-severity cross-site scripting vulnerability in 100plugins Open User Map, published on 8 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Q: Is CVE-2026-84818 being exploited?

There is no known exploitation of CVE-2026-84818 in the wild and no public exploit code.

Q: How do I fix CVE-2026-84818?

No fix has been published for CVE-2026-84818 yet. Limit exposure of the affected software until one is available.

High 7.1 Published 8 Sep 2026 Updated 8 Sep 2026

Unauthenticated attackers can inject malicious scripts via the Open User Map plugin, potentially compromising user sessions and site integrity.

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-2026-84818?

CVE-2026-84818 is a high-severity cross-site scripting vulnerability in 100plugins Open User Map, published on 8 Sep 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

Unauthenticated Cross Site Scripting (XSS) in Open User Map <= 1.4.50 versions.

Weakness: CWE-79

Which versions are affected by CVE-2026-84818?

How do I fix CVE-2026-84818?

No fix has been published for CVE-2026-84818 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-2026-84818 being exploited?