CVE-2021-33849

Name: CVE-2021-33849
Creator: NVD / NIST
Published: 2021-10-05T22:15:07.983+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 1.04%

Last modified Jun 17, 2026

CVE-2021-33849 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. A Cross-Site Scripting (XSS) attack can cause arbitrary code (JavaScript) to run in a user’s browser while the browser is connected to a trusted website. The attack targets your application's users and not the application itself while using your application as the attack's vehicle. EPSS estimates a 1.04% chance of exploitation in the next 30 days.

Description

A Cross-Site Scripting (XSS) attack can cause arbitrary code (JavaScript) to run in a user’s browser while the browser is connected to a trusted website. The attack targets your application's users and not the application itself while using your application as the attack's vehicle. The XSS payload executes whenever the user changes the form values or deletes a created form in Zoho CRM Lead Magnet Version 1.7.2.4.

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

1.04%

59.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Zohocorp	Zoho Crm Lead Magnet	1.7.2.4

References

https://cybersecurityworks.com/zerodays/cve-2020-29322-telnet-hardcoded-credentials.htmlNot Applicable
https://cybersecurityworks.com/zerodays/cve-2021-33849-stored-cross-site-scripting-xss-in-wordpress-plugin-zoho-crm-lead-magnet-version-1-7-2-4.htmlExploit, Mitigation, Third Party Advisory
https://cybersecurityworks.com/zerodays/cve-2020-29322-telnet-hardcoded-credentials.htmlNot Applicable
https://cybersecurityworks.com/zerodays/cve-2021-33849-stored-cross-site-scripting-xss-in-wordpress-plugin-zoho-crm-lead-magnet-version-1-7-2-4.htmlExploit, Mitigation, Third Party Advisory

Timeline

Published: Oct 5, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-33849?

How severe is CVE-2021-33849?

CVE-2021-33849 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 1.04% probability of exploitation in the next 30 days.

How do I fix CVE-2021-33849?

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-2021-33849?

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

Scan your code now

Source: NVD / NIST