6.1

CVE-2021-22872: revive-adserver revive_adserver Cross-site Scripting

Modified
Published 21-01-2021Last modified 03-08-2024

Vulnerability summary

CVE-2021-22872 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in revive-adserver revive_adserver. EPSS estimates a 3.49% chance of exploitation in the next 30 days, higher than 89% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (NVD)
EPSS score
3.49%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Timeline

  1. 21-01-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

Revive Adserver before 5.1.0 is vulnerable to a reflected cross-site scripting (XSS) vulnerability via the publicly accessible afr.php delivery script. While this issue was previously addressed in modern browsers as CVE-2020-8115, some older browsers (e.g., IE10) that do not automatically URL encode parameters were still vulnerable.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

3.49%

Chance of exploitation in the next 30 days

Percentile

89%

Versus all other CVEs

30-day change

Increase +0.04 pp

From 3.45% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (hackerone.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Revive-adserver1 product

1 vendor · 1 product

References

6 links