What is the vulnerability ID?

The vulnerability ID is CVE-2021-22871.

What is the severity of CVE-2021-22871?

The severity of CVE-2021-22871 is medium with a severity value of 4.8.

What software versions are affected by CVE-2021-22871?

Revive Adserver versions up to exclusive 5.1.0 are affected by CVE-2021-22871.

What is the impact of CVE-2021-22871?

CVE-2021-22871 allows any user with a manager account to store potentially malicious content, leading to a persistent cross-site scripting (XSS) vulnerability.

How can I fix CVE-2021-22871?

To fix CVE-2021-22871, upgrade to Revive Adserver version 5.1.0 or higher.

Vulnerability/
CVE-2021-22871

medium

4.8

CWE

21/1/2021

3/8/2024

CVE-2021-22871: XSS

First published: Thu Jan 21 2021(Updated: )

Revive Adserver before 5.1.0 permits any user with a manager account to store possibly malicious content in the URL website property, which is then displayed unsanitized in the affiliate-preview.php tag generation screen, leading to a persistent cross-site scripting (XSS) vulnerability.

Credit: support@hackerone.com

Affected Software	Affected Version	How to fix
Revive-adserver Revive Adserver	<5.1.0

Remedy

https://github.com/revive-adserver/revive-adserver/commit/62a2a0439

Remedy

https://github.com/revive-adserver/revive-adserver/commit/89b88ce26

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Reference Links

Frequently Asked Questions

What is the vulnerability ID?
The vulnerability ID is CVE-2021-22871.
What is the severity of CVE-2021-22871?
The severity of CVE-2021-22871 is medium with a severity value of 4.8.
What software versions are affected by CVE-2021-22871?
Revive Adserver versions up to exclusive 5.1.0 are affected by CVE-2021-22871.
What is the impact of CVE-2021-22871?
CVE-2021-22871 allows any user with a manager account to store potentially malicious content, leading to a persistent cross-site scripting (XSS) vulnerability.
How can I fix CVE-2021-22871?
To fix CVE-2021-22871, upgrade to Revive Adserver version 5.1.0 or higher.

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vendor/revive-adserver
canonical/revive-adserver revive adserver

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