CVE-2021-22889

6.1 mediumEPSS 31%

Medium (6.1) in revive-adserver revive adserver. EPSS 31% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 31% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2021-03-25
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

revive-adserver:revive_adserver

References

https://github.com/revive-adserver/revive-adserver/commit/2f868414
https://hackerone.com/reports/1097217
https://www.revive-adserver.com/security/revive-sa-2021-003/
https://github.com/revive-adserver/revive-adserver/commit/2f868414
https://hackerone.com/reports/1097217

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