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No exploitation reportedFix available

CVE-2021-24149

No exploitation reported by the sources we read.

  • Published2021-03-18
  • Fixed in5.16.6
  • WeaknessCWE-89

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Unvalidated input in the Modern Events Calendar Lite WordPress plugin, versions before 5.16.6, did not sanitise the mec[post_id] POST parameter in the mec_fes_form AJAX action when logged in as an author+, leading to an authenticated SQL Injection issue.

Timeline

dates in UTC
  1. 2021-03-1815:15CVE publishedNVD

Versions per branch

NVD
Webnus modern events calendar lite
BranchAffectedFixed in
5.16< 5.16.65.16.6

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Webnus modern events calendar lite to 5.16.6

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.18.8read 2026-10-23
  • NVDCVSS 2.06.5read 2026-10-23
  • CNAweakness (CWE)CWE-89known since 2026-10-23
  • NVDweakness (CWE)CWE-89read 2026-10-23
  • FIRST EPSSEPSS score1.5 %2026-11-08
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2021-03-18
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-5xcq-547q-fvjw

Frequently asked questions

What is CVE-2021-24149?

Unvalidated input in the Modern Events Calendar Lite WordPress plugin, versions before 5.16.6, did not sanitise the mec[post_id] POST parameter in the mec_fes_form AJAX action when logged in as an author+, leading to an authenticated SQL Injection issue.

Is CVE-2021-24149 actively exploited?

Active exploitation of CVE-2021-24149 has not been confirmed. Its EPSS score was 1.5% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-24149?

CVE-2021-24149 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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