CVE-2026-77034 Missing authorization in JEM - Joomla Event Manager extension for Joomla
Unauthenticated users can overwrite and force-publish articles in Joomla Event Manager due to missing authorization checks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-77034?
CVE-2026-77034 is a medium-severity missing authorization vulnerability in joomlaeventmanager.net JEM - Joomla Event Manager extension for Joomla, published on 27 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Joomla Extension - joomlaeventmanager.net - Unauthenticated article overwrite and force-publish in Joomla Event Manager < 5.0.1 - Any visitor holding their own session token can republish and overwrite an article associated with an event.
Weakness: CWE-284
Which versions are affected by CVE-2026-77034?
How do I fix CVE-2026-77034?
No fix has been published for CVE-2026-77034 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-77034 being exploited?
There is no known exploitation of CVE-2026-77034 in the wild and no public exploit code.
Sources
Also known as GHSA-4pgp-q6vx-cg62.