CVE-2021-43698

Name: CVE-2021-43698
Creator: NVD / NIST
Published: 2021-11-29T12:15:08.217+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.61%

Last modified Jun 17, 2026

CVE-2021-43698 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. phpWhois (last update Jun 30 2021) is affected by a Cross Site Scripting (XSS) vulnerability. In file example.php, the exit function will terminate the script and print the message to the user. EPSS estimates a 0.61% chance of exploitation in the next 30 days.

Description

phpWhois (last update Jun 30 2021) is affected by a Cross Site Scripting (XSS) vulnerability. In file example.php, the exit function will terminate the script and print the message to the user. The message will contain $_GET['query'] then there is a XSS vulnerability.

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

0.61%

44.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Phpwhois Project	Phpwhois	All versions

References

https://github.com/sparc/phpWhois.org/issues/21Exploit, Issue Tracking, Third Party Advisory
https://github.com/sparc/phpWhois.org/issues/21Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Nov 29, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-43698?

How severe is CVE-2021-43698?

CVE-2021-43698 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.61% probability of exploitation in the next 30 days.

How do I fix CVE-2021-43698?

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-2021-43698?

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

Scan your code now

Source: NVD / NIST