PT-2021-16349 · WordPress · Events Calendar

Jrxnm + 1 · Published 2021-11-29 · Updated 2025-09-18 · CVE-2021-24876

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions: The Registrations for the Events Calendar WordPress plugin versions prior to 2.7.5

Description: The issue concerns a Reflected Cross-Site Scripting problem. It arises because the v parameter is not properly escaped before being outputted back in an attribute. This lack of escaping leads to potential scripting attacks.

Recommendations: For versions prior to 2.7.5, update to version 2.7.5 or later to resolve the issue. As a temporary workaround, consider restricting access to the attribute that outputs the v parameter to minimize the risk of exploitation.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-24876

Affected Products

Events Calendar

References · 6

• 🔥 https://wpscan.com/vulnerability/e77c2493-993d-418d-9629-a1f07b5a2b6f · Exploit
• https://osv.dev/vulnerability/CVE-2021-24876 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-24876 · Security Note
• https://twitter.com/pdnuclei_bot/status/1968706642326786300 · Twitter Post
• https://t.me/cibsecurity/33028 · Telegram Post
• https://t.me/cvenotify/23874 · Telegram Post