CVE-2021-24980

Name: CVE-2021-24980
Creator: NVD / NIST
Published: 2021-12-27T11:15:09.247+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.80%

Last modified Jun 17, 2026

CVE-2021-24980 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. The Gwolle Guestbook WordPress plugin before 4.2.0 does not sanitise and escape the gwolle_gb_user_email parameter before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting issue in an admin page. EPSS estimates a 0.80% chance of exploitation in the next 30 days.

Description

The Gwolle Guestbook WordPress plugin before 4.2.0 does not sanitise and escape the gwolle_gb_user_email parameter before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting issue in an admin page

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.80%

51.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Gwolle Guestbook Project	Gwolle Guestbook	< 4.2.0

References

https://wpscan.com/vulnerability/e50bcb39-9a01-433f-81b3-fd4018672b85Exploit, Third Party Advisory
https://wpscan.com/vulnerability/e50bcb39-9a01-433f-81b3-fd4018672b85Exploit, Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2021-24980?

How severe is CVE-2021-24980?

CVE-2021-24980 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.80% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24980?

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-2021-24980?

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

Scan your code now

Source: NVD / NIST