CVE-2023-4635

Name: CVE-2023-4635
Creator: NVD / NIST
Published: 2023-10-21T08:15:08.897+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.62%

Last modified Jun 17, 2026

CVE-2023-4635 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. The EventON plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'tab' parameter in versions up to, and including, 2.2.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.. EPSS estimates a 0.62% chance of exploitation in the next 30 days.

Description

The EventON plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'tab' parameter in versions up to, and including, 2.2.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.62%

45.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Myeventon	Eventon-Lite	<= 2.2.2

References

https://github.com/xsn1210/vul/blob/main/xss%5BEventON%5D%20.mdExploit, Third Party Advisory
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2981861%40eventon-lite&new=2981861%40eventon-lite&sfp_email=&sfph_mail=
https://www.wordfence.com/threat-intel/vulnerabilities/id/115ad0b2-febe-485a-8fb5-9bd6edc37ef7?source=cveExploit, Third Party Advisory
https://github.com/xsn1210/vul/blob/main/xss%5BEventON%5D%20.mdExploit, Third Party Advisory
https://www.wordfence.com/threat-intel/vulnerabilities/id/115ad0b2-febe-485a-8fb5-9bd6edc37ef7?source=cveExploit, Third Party Advisory

Timeline

Published: Oct 21, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-4635?

How severe is CVE-2023-4635?

CVE-2023-4635 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.62% probability of exploitation in the next 30 days.

How do I fix CVE-2023-4635?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-4635?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST