PT-2021-21378 · Yith · Yith Maintenance Mode

Bugb Hunter · Published 2021-09-27 · Updated 2021-09-30 · CVE-2021-36841

Positive Technologies (AI Summary)

CVSS v3.1

6.9

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions YITH Maintenance Mode (WordPress plugin) versions <= 1.3.7

Description The issue is an Authenticated Stored Cross-Site Scripting (XSS) vulnerability. It affects the &yith maintenance newsletter submit label parameter. This vulnerability can be exploited even when WordPress configuration disallows unfiltered HTML.

Recommendations For YITH Maintenance Mode (WordPress plugin) versions <= 1.3.7, update to a version greater than 1.3.7 to resolve the issue. As a temporary workaround, consider restricting access to the vulnerable parameter &yith maintenance newsletter submit label to minimize the risk of exploitation.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-36841

Affected Products

Yith Maintenance Mode

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2021-36841 · Security Note
• https://osv.dev/vulnerability/CVE-2021-36841 · Vendor Advisory
• https://wordpress.org/plugins/yith-maintenance-mode/#developers · Note
• https://patchstack.com/database/vulnerability/yith-maintenance-mode/wordpress-yith-maintenance-mode-plugin-1-3-7-authenticated-stored-cross-site-scripting-xss-vulnerability · Note