CVE-2021-22871

Public Exploit

Description

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.

Category

4.8
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.94% Top 25%
Vendor Advisory revive-adserver.com
Affected: n/a https://github.com/revive-adserver/revive-adserver
Published at:
Updated at:

References

Link Tags
https://www.revive-adserver.com/security/revive-sa-2021-001/ vendor advisory
https://hackerone.com/reports/819362 third party advisory exploit
https://github.com/revive-adserver/revive-adserver/commit/89b88ce26 third party advisory patch
https://github.com/revive-adserver/revive-adserver/commit/62a2a0439 third party advisory patch
http://seclists.org/fulldisclosure/2021/Jan/60 mailing list third party advisory broken link
http://packetstormsecurity.com/files/161070/Revive-Adserver-5.0.5-Cross-Site-Scripting-Open-Redirect.html vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-22871?
CVE-2021-22871 has been scored as a medium severity vulnerability.
How to fix CVE-2021-22871?
To fix CVE-2021-22871, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-22871 being actively exploited in the wild?
It is possible that CVE-2021-22871 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-22871?
CVE-2021-22871 affects n/a https://github.com/revive-adserver/revive-adserver.
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