What’s Vulnerable › Vulnerabilities

CVE-2021-22874

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 18.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-01-28 · updated 2026-06-17
• Weakness: CWE-79

Description

Revive Adserver before 5.1.1 is vulnerable to a reflected XSS vulnerability in userlog-index.php via the `period_preset` parameter.

Affected products

• Revive Adserver: before 5.1.1 — fixed in 5.1.1

How to fix

Upgrade to a fixed version: Revive Adserver 5.1.1. Check the vendor advisory for mitigations.

References

• https://github.com/revive-adserver/revive-adserver/commit/e2a67ce8
• https://hackerone.com/reports/1083231
• https://www.revive-adserver.com/security/revive-sa-2021-002/
• https://github.com/revive-adserver/revive-adserver/commit/e2a67ce8
• https://hackerone.com/reports/1083231
• https://www.revive-adserver.com/security/revive-sa-2021-002/

Get alerted when CVE-2021-22874 or the next vulnerability affects your stack