CVE-2021-24946Public exploitNetwork attack vector

Unauthenticated SQL injection via unescaped time parameter

Published Dec 13, 2021 · Updated Aug 3, 2024

SQL injection in Webnus Modern Events Calendar Lite before 6.1.5 allows remote attackers to read or alter database data without authentication. The mec_load_single_page AJAX action inserts the unsanitized, unescaped time parameter into a SQL statement. Because the action is exposed through WordPress admin-ajax.php without authentication, crafted requests can query or modify data accessible to the site database account.

CVSS severity9.8
Critical
EPSS probability72.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in Webnus Modern Events Calendar Lite before 6.1.5 allows remote attackers to read or alter database data without authentication. The mec_load_single_page AJAX action inserts the unsanitized, unescaped time parameter into a SQL statement. Because the action is exposed through WordPress admin-ajax.php without authentication, crafted requests can query or modify data accessible to the site database account.

The record

CVE
CVE-2021-24946
Published
Dec 13, 2021
Updated
Aug 3, 2024
Vendor
Webnus
Product
Modern Events Calendar Lite
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.1.5 <6.1.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Webnus · Modern Events Calendar Liteversion=6.1.5 <6.1.5

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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