EventON (Free < 2.2.7, Premium < 4.5.5) - Admin+ Stored Cross-Site Scripting

published 2024-01-16 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-58272

cvss: 4.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits: 0; none known

The EventON WordPress plugin before 4.5.5, EventON WordPress plugin before 2.2.7 does not sanitize 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).

Patch / fix

fixed in 1

Unknown EventON 2.2.7, 4.5.5

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-01-30)

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

wpscan.com https://wpscan.com/vulnerability/fa4eea26-0611-4fa8-a947-f78ddf46a56a/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	4.8	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
NVD	3.1	4.8	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
CNA	3.1	4.8	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Affected products

Unknown EventON

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation
CWE-116 Improper Encoding or Escaping of Output

Technology feeds

WordPress rss critical rss

References

wpscan.com /vulnerability/fa4eea26-0611-4fa8-a947-f78ddf46a56a/
exploit, vdb-entry, technical-description, third-party-advisory

Sources

CVE List CVE-2023-6005
NVD CVE-2023-6005

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary