CVE-2026-81300 WordPress Calculation For Contact Form 7 plugin <= 1.0 - Cross Site Scripting (XSS) vulnerability
Unauthenticated attackers can inject malicious scripts via the Calculation For Contact Form 7 plugin, potentially compromising user sessions.
- 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-2026-81300?
CVE-2026-81300 is a high-severity cross-site scripting vulnerability in silverplugins217 Calculation For Contact Form 7, published on 3 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 Calculation For Contact Form 7 <= 1.0 versions.
Weakness: CWE-79
Which versions are affected by CVE-2026-81300?
How do I fix CVE-2026-81300?
No fix has been published for CVE-2026-81300 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-2026-81300 being exploited?
There is no known exploitation of CVE-2026-81300 in the wild and no public exploit code.
Sources
Also known as GHSA-jw45-8p57-gxfw.