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CVE-2026-77034— Joomla Extension - joomlaeventmanager.net - Unauthenticated article overwrite and force-publish in Joomla Event Manager < 5.0.1

Quick assessment

Affected
joomlaeventmanager.net JEM - Joomla Event Manager extension for Joomla
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Joomla 插件 - joomlaeventmanager.net - Joomla Event Manager 5.0.1 之前版本中存在的未认证文章覆盖与强制发布漏洞：任何拥有自身会话令牌（session token）的访客均可重新发布并覆盖与某个活动相关联的文章。

CVSS 6.9 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-77034

Vulnerability Information
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Vulnerability Title
Joomla Extension - joomlaeventmanager.net - Unauthenticated article overwrite and force-publish in Joomla Event Manager < 5.0.1
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
joomlaeventmanager.net JEM - Joomla Event Manager extension for Joomla 1.0.0-5.0.0 -

II. Public POCs for CVE-2026-77034

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-77034

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Vendor Pages for CVE-2026-77034 (1)

Same Patch Batch · joomlaeventmanager.net · 2026-08-27 · 5 CVEs total

CVE-2026-77991 9.4 CRITICAL Joomla Extension - joomlaeventmanager.net - Privileged remote code execution in Joomla Eve
CVE-2026-77990 5.3 MEDIUM Joomla Extension - joomlaeventmanager.net - Attendee lists readable by any logged-in user
CVE-2026-77989 5.3 MEDIUM Joomla Extension - joomlaeventmanager.net - Reflected XSS via the PDF export link in Jooml
CVE-2026-77035 5.1 MEDIUM Joomla Extension - joomlaeventmanager.net - Cross-user event and venue takeover through fo

IV. Related Vulnerabilities

Same product: JEM - Joomla Event Manager extension for Joomla
Same vendor: joomlaeventmanager.net
Same weakness: CWE-284

V. Comments for CVE-2026-77034

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