CVE-2026-65762 Joomla Extension - phoca.cz - Reflected XSS vulnerability in Phoca Guestbook 5.0.0-6.1.0
Attackers can execute arbitrary scripts in victim browsers via reflected XSS in the Phoca Guestbook Joomla extension.
- 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-2026-65762?
CVE-2026-65762 is a medium-severity cross-site scripting vulnerability in phoca.cz Phoca Guestbook extension for Joomla, published on 23 Jul 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
Joomla Extension - phoca.cz - Reflected XSS vulnerability in Phoca Guestbook 5.0.0-6.1.0 - Improper validation of user inputs lead to a reflective XSS vulnerability.
Weakness: CWE-79
Which versions are affected by CVE-2026-65762?
How do I fix CVE-2026-65762?
No fix has been published for CVE-2026-65762 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-2026-65762 being exploited?
There is no known exploitation of CVE-2026-65762 in the wild and no public exploit code.
Sources
Also known as GHSA-576p-fvmq-q54x.