Authorization bypass in joomlaeventmanager.net JEM - Joomla Event Manager extension for…
Priority LOW 24CWE-639Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.
Summary
Joomla Extension - joomlaeventmanager.net - Attendee lists readable by any logged-in user in Joomla Event Manager < 5.0.1 - A non-manager can therefore read attendee names, usernames, registration dates and statuses for events they do not manage, including lists belonging to unpublished events.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00351 28th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| joomlaeventmanager.net | JEM - Joomla Event Manager extension for Joomla | 1.0.0-5.0.0 | — | No fix listed | CNA |
- JEM - Joomla Event Manager extension for Joomla Vendorjoomlaeventmanager.net Affected 1.0.0-5.0.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-77990
- 2026-10-03 Alias added: GHSA-839q-fphm-4fh3
References
More joomlaeventmanager.net vulnerabilities
- TI-2026-54266 Unrestricted file upload in joomlaeventmanager.net JEM - Joomla Event Manager extension… CVSS 4.0CRITICAL 9.4
- TI-2026-53813 Improper access control in joomlaeventmanager.net JEM - Joomla Event Manager extension… CVSS 4.0MEDIUM 6.9
- TI-2026-54264 Cross-site scripting in joomlaeventmanager.net JEM - Joomla Event Manager extension for… CVSS 4.0MEDIUM 5.3
- TI-2026-53814 Authorization bypass in joomlaeventmanager.net JEM - Joomla Event Manager extension for… CVSS 4.0MEDIUM 5.1
Sources
- CVE-2026-77990 · CVE Program
- CVE-2026-77990 · NVD
- FIRST EPSS
- GHSA-839q-fphm-4fh3 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences