Advisory Published
Updated

CVE-2021-20729

First published: Thu Mar 31 2022(Updated: )

Cross-site scripting vulnerability in pfSense CE and pfSense Plus (pfSense CE software versions 2.5.2 and earlier, and pfSense Plus software versions 21.05 and earlier) allows a remote attacker to inject an arbitrary script via a malicious URL.

Credit: vultures@jpcert.or.jp

Affected SoftwareAffected VersionHow to fix
Netgate pfSense Plus<=21.05
pfSense pfSense<=2.5.2

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Frequently Asked Questions

  • What is the severity of CVE-2021-20729?

    The severity of CVE-2021-20729 is medium with a severity value of 6.1.

  • How does CVE-2021-20729 affect pfSense CE?

    CVE-2021-20729 affects pfSense CE versions 2.5.2 and earlier, allowing a remote attacker to inject an arbitrary script via a malicious URL.

  • How does CVE-2021-20729 affect pfSense Plus?

    CVE-2021-20729 affects pfSense Plus versions 21.05 and earlier, allowing a remote attacker to inject an arbitrary script via a malicious URL.

  • What is the Common Weakness Enumeration (CWE) for CVE-2021-20729?

    The Common Weakness Enumeration (CWE) for CVE-2021-20729 is CWE-79.

  • Where can I find more information about CVE-2021-20729?

    You can find more information about CVE-2021-20729 at the following references: [link1](https://docs.netgate.com/downloads/pfSense-SA-21_02.captiveportal.asc), [link2](https://jvn.jp/en/jp/JVN87751554/index.html).

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