Vulnerability · Published Aug 27, 2026 · Assigned by Joomla
CVE-2026-77034Joomla Extension - joomlaeventmanager.net - Unauthenticated article overwrite and force-publish in Joomla Event Manager < 5.0.1
Medium 6.9
In plain English
A medium-severity improper access control in JEM - Joomla Event Manager extension for Joomla from joomlaeventmanager.net. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).
Severity (CVSS 4.0)6.9Medium
Exploit odds (30 days)0.4%top 65.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| joomlaeventmanager.net | JEM - Joomla Event Manager extension for Joomla | 1.0.0-5.0.0 |
Weakness: CWE-284 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N