Read the docs
TI-2023-04054 Aliases CVE-2023-4388GHSA-q5xh-mxrq-59gx

EventON < 2.2 - Admin+ Stored XSS

Priority MEDIUM 55Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

The EventON WordPress plugin before 2.2 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0047 40th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix Fixed EventON (Unknown): 2.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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

VendorProductAffected versionsFixed inStatusSource
UnknownEventONbefore 2.22.2Patch availableCNA
  • EventON VendorUnknown Affected before 2.2 Fixed in 2.2 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:myeventon:eventon:*:*:*:*:*:wordpress:*:*before 2.2Vulnerableashanjay
  • cpe:2.3:a:myeventon:eventon:*:*:*:*:*:wordpress:*:* Versions before 2.2 Vulnerable ·ashanjay

Remediation

  • Fix · CNA EventON (Unknown) Fixed in 2.2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-4388
  2. 2026-10-03 Alias added: GHSA-q5xh-mxrq-59gx

References

Exploit 1

  • TI-2023-03015 EventON < 2.1.2 - Unauthenticated Post Access via IDOR CVSS 3.1MEDIUM 5.3
  • TI-2023-02619 EventON < 2.1.2 - Unauthenticated Event Access CVSS 3.1MEDIUM 5.3
  • TI-2024-04425 EventON < 2.2.15 - Admin+ Stored Cross-Site Scripting via event subtitle CVSS 3.1MEDIUM 5.9
  • TI-2023-06586 EventON < 4.4.1 - Reflected Cross-Site Scripting CVSS 3.1MEDIUM 6.1
  • TI-2024-00210 EventON (Free < 2.2.8, Premium < 4.5.5) - Unauthenticated Email Address Disclosure CVSS 3.1MEDIUM 5.3
  • TI-2024-06409 EventON < 2.2.17 - Admin+ Stored XSS CVSS 3.1MEDIUM 4.8
See all 17 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences