CVE-2021-22889

Public Exploit

Description

Revive Adserver before v5.2.0 is vulnerable to a reflected XSS vulnerability in the `statsBreakdown` parameter of stats.php (and possibly other scripts) due to single quotes not being escaped. An attacker could trick a user with access to the user interface of a Revive Adserver instance into clicking on a specifically crafted URL and pressing a certain key combination to execute injected JavaScript code.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.81% Top 30%
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-2021-003/ vendor advisory
https://hackerone.com/reports/1097217 third party advisory exploit
https://github.com/revive-adserver/revive-adserver/commit/2f868414 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-22889?
CVE-2021-22889 has been scored as a medium severity vulnerability.
How to fix CVE-2021-22889?
To fix CVE-2021-22889, 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-2021-22889 being actively exploited in the wild?
It is possible that CVE-2021-22889 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-2021-22889?
CVE-2021-22889 affects n/a https://github.com/revive-adserver/revive-adserver.
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