CVE-2021-36841

Name: CVE-2021-36841
Creator: NVD / NIST
Published: 2021-09-27T16:15:09.327+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.61%

Last modified Jun 17, 2026

CVE-2021-36841 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Authenticated Stored Cross-Site Scripting (XSS) vulnerability in YITH Maintenance Mode (WordPress plugin) versions <= 1.3.7, vulnerable parameter &yith_maintenance_newsletter_submit_label. Possible even when unfiltered HTML is disallowed by WordPress configuration.. EPSS estimates a 0.61% chance of exploitation in the next 30 days.

Description

Authenticated Stored Cross-Site Scripting (XSS) vulnerability in YITH Maintenance Mode (WordPress plugin) versions <= 1.3.7, vulnerable parameter &yith_maintenance_newsletter_submit_label. Possible even when unfiltered HTML is disallowed by WordPress configuration.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.61%

44.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Yithemes	Yith Maintenance Mode	<= 1.3.7

References

https://patchstack.com/database/vulnerability/yith-maintenance-mode/wordpress-yith-maintenance-mode-plugin-1-3-7-authenticated-stored-cross-site-scripting-xss-vulnerabilityThird Party Advisory
https://wordpress.org/plugins/yith-maintenance-mode/#developersProduct, Third Party Advisory
https://patchstack.com/database/vulnerability/yith-maintenance-mode/wordpress-yith-maintenance-mode-plugin-1-3-7-authenticated-stored-cross-site-scripting-xss-vulnerabilityThird Party Advisory
https://wordpress.org/plugins/yith-maintenance-mode/#developersProduct, Third Party Advisory

Timeline

Published: Sep 27, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-36841?

How severe is CVE-2021-36841?

CVE-2021-36841 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.61% probability of exploitation in the next 30 days.

How do I fix CVE-2021-36841?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-36841?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST