The EventON plugin through 3.0.5 for WordPress allows addons/?q= XSS via the search field.

published 2020-11-30 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-21768

cvss: 6.1; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 12.9%; EPSS 12.9% chance of exploitation in 30 days, percentile 96%
public exploits: 1; Exploit-DB, plus a Nuclei check

Timeline

2020-11-30 Published
2020-12-01 First public exploit (EDB-49130)

Exploit prediction

12.88% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

EDB-49130 Wordpress Plugin EventON Calendar 3.0.5 - Reflected Cross-Site Scripting webapps, 2020-12-01
Nuclei template Wordpress EventON Calendar 3.0.5 - Cross-Site Scripting nuclei detection template
github.com https://github.com/mustgundogdu/Research/tree/main/EventON_PLUGIN_XSS referenced PoC, tagged "exploit" by a source, unverified
packetstormsecurity.com http://packetstormsecurity.com/files/160282/WordPress-EventON-Calendar-3.0.5-Cross-Site-Scripting.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

Technology feeds

WordPress rss critical rss

References

github.com /mustgundogdu/Research/tree/main/EventON_PLUGIN_XSS
exploit, third-party-advisory
packetstormsecurity.com /files/160282/WordPress-EventON-Calendar-3.0.5-Cross-Site-Scripting.html
exploit, third-party-advisory, vdb-entry
myeventon.com /news/
vendor-advisory

Sources

CVE List CVE-2020-29395
NVD CVE-2020-29395

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