CVE-2026-77034 PUBLISHED

Joomla Extension - joomlaeventmanager.net - Unauthenticated article overwrite and force-publish in Joomla Event Manager < 5.0.1

Assigner: Joomla
Reserved: 20.08.2026 Published: 27.08.2026 Updated: 27.08.2026

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.

Metrics

CVSS 4.0

CVSS 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
CVSS Score: 6.9

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	joomlaeventmanager.net
Product	JEM - Joomla Event Manager extension for Joomla
Versions	Default: unaffected Version 1.0.0-5.0.0 is affected

Credits

Phil Taylor, mysites.guru finder

References

https://www.joomlaeventmanager.net/

Problem Types

CWE-284 Improper Access Control CWE