CVE-2021-22889

MEDIUM
Published Mar 25, 20215y ago · Modified Jun 17, 20262w ago
6.1 CVSS 3.1
Medium
Find Similar
Published Mar 25, 2021 5y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
6.1
Exploitability
2.8
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 1

VendorProductVersionRange
revive-adserverrevive_adserver* <5.2.0

References 3

  • github.com https://github.com/revive-adserver/revive-adserver/commit/2f868414
    PatchThird Party Advisory
  • hackerone.com https://hackerone.com/reports/1097217
    ExploitThird Party Advisory
  • revive-adserver.com https://www.revive-adserver.com/security/revive-sa-2021-003/
    Vendor Advisory

Remediation

  • github.com https://github.com/revive-adserver/revive-adserver/commit/2f868414
    PatchThird Party Advisory