PT-2021-22547 · WordPress · Notification Wordpress Plugin

Published 2021-11-01 · Updated 2021-11-02 · CVE-2021-39340

Positive Technologies (AI Summary)

CVSS v3.1

4.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Notification WordPress plugin versions up to and including 7.2.4

Description: The issue arises from insufficient input validation and sanitization via several parameters in the ~/src/classes/Utils/Settings.php file, allowing attackers with administrative user access to inject arbitrary web scripts. This affects multi-site installations where unfiltered html is disabled for administrators, and sites where unfiltered html is disabled.

Recommendations: For versions up to and including 7.2.4, update to a version later than 7.2.4 to resolve the issue. As a temporary workaround, consider restricting access to the ~/src/classes/Utils/Settings.php file until a patch is available. Restrict administrative user access to minimize the risk of exploitation. Ensure unfiltered html is enabled for administrators in multi-site installations and sites where it is currently disabled, as a temporary measure to prevent exploitation.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-39340

Affected Products

Notification Wordpress Plugin

References · 6

• 🔥 https://github.com/BigTiger2020/word-press/blob/main/Notification.md · Exploit
• https://osv.dev/vulnerability/CVE-2021-39340 · Vendor Advisory
• https://plugins.trac.wordpress.org/browser/notification/tags/7.2.4/src/classes/Utils/Settings.php#L167 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-39340 · Security Note
• https://t.me/cibsecurity/31576 · Telegram Post
• https://wordfence.com/vulnerability-advisories/#CVE-2021-39340 · Note