CVE-2020-9459: webnus modern events calendar lite Cross-site Scripting
Vulnerability summary
CVE-2020-9459 is a medium (CVSS 5.4) Cross-site Scripting vulnerability in webnus modern events calendar lite. EPSS estimates a 1.02% chance of exploitation in the next 30 days, higher than 62.9% of scored vulnerabilities. 2 public exploits are recorded. Fixed in 5.1.7.
Timeline
- 28-02-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Multiple Stored Cross-site scripting (XSS) vulnerabilities in the Webnus Modern Events Calendar Lite plugin through 5.1.6 for WordPress allows remote authenticated users (with minimal permissions) to inject arbitrary JavaScript, HTML, or CSS via Ajax actions. This affects mec_save_notifications and import_settings.
CVSS metrics
3 scores · 2 sources · 2 versions- wordfenceSource5.4MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS trend
Probability
1.02%
Chance of exploitation in the next 30 days
Percentile
63%
Versus all other CVEs
30-day change
0.00 pp
From 1.02% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundExploit Reference (wpvulndb.com)
Maturity: unknown
Exploit Reference (wordfence.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Webnus1 product
- modern events calendar lite≤ 5.1.6
Wordpress1 product
- modern-events-calendar-lite< 5.1.7
2 vendors · 2 products
References
3 links- www.wordfence.com/blog/2020/02/site-takeover-campaign-exploits-multiple-zero-day-vulnerabilities/X Refsource MISCExploitThird Party Advisory