SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-22888

Revive Adserver before v5.2.0 is vulnerable to a reflected XSS vulnerability in the `status` parameter of campaign-zone-zones.php.

MEDIUM 6.1EPSS 16.3%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 16.3%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.

Description

Revive Adserver before v5.2.0 is vulnerable to a reflected XSS vulnerability in the `status` parameter of campaign-zone-zones.php. 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 execute injected JavaScript code.

CVSS 3.1
6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
16.35% probability · 97th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-79
Affected
revive-adserver/revive adserver
Source
support@hackerone.com
EPSS trend
0%10%20%22 September 2026: 16.35%26 October 2026: 16.35%22 September 202626 October 2026

EPSS moved from 16.3% on 22 September 2026 to 16.3% on 26 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.