PT-2022-9639 · WordPress · Events Calendar

Krzysztof Zając · Published 2022-01-24 · Updated 2022-01-27 · CVE-2021-25083

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 Registrations for the Events Calendar WordPress plugin versions prior to 2.7.10

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

Recommendations For versions prior to 2.7.10, update to version 2.7.10 or later to resolve the issue. As a temporary workaround, consider restricting access to the settings page to minimize the risk of exploitation. Avoid using the qtype parameter in the affected settings page until the issue is resolved.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-25083

Affected Products

Events Calendar

References · 5

• 🔥 https://wpscan.com/vulnerability/9b69544d-6a08-4757-901b-6ccf1cd00ecc · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-25083 · Security Note
• https://plugins.trac.wordpress.org/changeset/2648377 · Patch
• https://osv.dev/vulnerability/CVE-2021-25083 · Vendor Advisory
• https://t.me/cibsecurity/36102 · Telegram Post