CVE-2021-24834

Name: CVE-2021-24834
Creator: NVD / NIST
Published: 2021-11-17T11:15:08.16+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 1.48%

Last modified Jun 17, 2026

CVE-2021-24834 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. The YOP Poll WordPress plugin before 6.3.1 is affected by a stored Cross-Site Scripting vulnerability which exists in the Create Poll - Options module where a user with a role as low as author is allowed to execute arbitrary script code within the context of the application. This vulnerability is due to insufficient validation of custom label parameters - vote button label , results link label and back to vote caption label.. EPSS estimates a 1.48% chance of exploitation in the next 30 days.

Description

The YOP Poll WordPress plugin before 6.3.1 is affected by a stored Cross-Site Scripting vulnerability which exists in the Create Poll - Options module where a user with a role as low as author is allowed to execute arbitrary script code within the context of the application. This vulnerability is due to insufficient validation of custom label parameters - vote button label , results link label and back to vote caption label.

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

1.48%

70.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Yop-Poll	Yop Poll	< 6.3.1

References

https://plugins.trac.wordpress.org/changeset/2605368Patch, Third Party Advisory
https://wpscan.com/vulnerability/72f58b14-e5cb-4f1c-a16f-621238c6ebbfThird Party Advisory
https://www.fortiguard.com/zeroday/FG-VD-21-053Third Party Advisory
https://plugins.trac.wordpress.org/changeset/2605368Patch, Third Party Advisory
https://wpscan.com/vulnerability/72f58b14-e5cb-4f1c-a16f-621238c6ebbfThird Party Advisory
https://www.fortiguard.com/zeroday/FG-VD-21-053Third Party Advisory

Timeline

Published: Nov 17, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-24834?

How severe is CVE-2021-24834?

CVE-2021-24834 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 1.48% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24834?

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-2021-24834?

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

Scan your code now

Source: NVD / NIST