Event Tickets and Registration WordPress plugin: Unauthenticated attendee name disclosure
Summary
The Event Tickets and Registration WordPress plugin before 5.30.3.1 returns attendee data over the REST API without checking whether the event shows a public attendee list. An unauthenticated remote attacker can therefore retrieve the names of attendees of such events. The record describes only names, but registration forms may also collect contact details.
Affected
- Event Tickets and Registration WordPress plugin before 5.30.3.1
- Vendor and version range per CVE record: 0 to before 5.30.3.1 (lower bound not a real range)
- Reported versions 5.28.4 and 5.29.0.1 (VulDB, not a confirmed full list)
- Vendor: unconfirmed, likely The Events Calendar (Modern Tribe)
Fixed in
- Fixed in 5.30.3.1
Workaround
- No vendor workaround documented.
- If an update is not immediately possible, restrict unauthenticated access to the plugin's REST routes at a web application firewall or reverse proxy. Test first, as legitimate features may break.
Exploitation
- Not known to be exploited.
- No public exploit or proof of concept found in Metasploit, Exploit-DB or nuclei indexes as of 10 Nov 2026.
- CISA SSVC: Automatable yes, technical impact partial.
Our recommendation
- Update Event Tickets and Registration to version 5.30.3.1 or later.
- Check related CVE-2026-122087 at the same time.
- Identify WordPress sites with the plugin and check whether they are internet-accessible.
- Review which data registration forms collect and assess whether a privacy notification is required under the revised Swiss FADP.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- WPScan advisory wpscan.com
- CVE Record CVE-2026-122061 www.cve.org
- VulDB CVE-2026-122061 vuldb.com
- OffSeq Radar CVE-2026-122061 radar.offseq.com
- OpenCVE CVE-2026-122061 app.opencve.io
- The Events Calendar support forum: attendee registration theeventscalendar.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 11 Nov 2026, 18:04.
Original description (NVD)
The Event Tickets and Registration WordPress plugin before 5.30.3.1 does not correctly check whether an event displays a public attendee list before returning one of its attendees over the REST API, allowing unauthenticated users to retrieve the names of attendees of events that do not show a public attendee list.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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