CVE-2021-24146: unknown modern events calendar lite Missing Authorization
Vulnerability summary
CVE-2021-24146 is a high (CVSS 7.5) Missing Authorization vulnerability in unknown modern events calendar lite. EPSS estimates a 31.04% chance of exploitation in the next 30 days, higher than 98.2% of scored vulnerabilities. 3 public exploits are recorded. Fixed in 5.16.5.
Timeline
- 18-03-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
Lack of authorisation checks in the Modern Events Calendar Lite WordPress plugin, versions before 5.16.5, did not properly restrict access to the export files, allowing unauthenticated users to exports all events data in CSV or XML format for example.
CVSS metrics
3 scores · 2 sources · 2 versions- wordfenceSource7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
31.04%
Chance of exploitation in the next 30 days
Percentile
98%
Versus all other CVEs
30-day change
0.00 pp
From 31.04% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
3 foundExploit Reference (wpscan.com)
Maturity: unknown
Exploit Reference (packetstormsecurity.com)
Maturity: unknown
Wordpress Plugin Modern Events Calendar 5.16.2 - Event export (Unauthenticated)
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Unknown1 product
- modern events calendar lite≥ 5.16.5, < 5.16.5
Webnus1 product
- modern events calendar lite< 5.16.5
Wordpress1 product
- modern-events-calendar-lite≤ 5.16.4 (fixed in 5.16.5)
3 vendors · 3 products
References
3 links- wpscan.com/vulnerability/c7b1ebd6-3050-4725-9c87-0ea525f8feccX Refsource MISCExploitThird Party Advisory