XSS in Revive-Adserver Revive Adserver
CVE-2021-22872
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.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.034 (87.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Revive-adserver Revive_adserver
- N/a Https://github.com/revive-adserver/revive-adserver — versions Fixed in 5.1.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- support@hackerone.com (x_refsource_MISC, Vendor Advisory)
- support@hackerone.com (Exploit, Third Party Advisory, x_refsource_MISC)
- support@hackerone.com (Patch, Third Party Advisory, x_refsource_MISC)
- support@hackerone.com (Patch, Third Party Advisory, x_refsource_MISC)
- support@hackerone.com (mailing-list, x_refsource_FULLDISC, Mailing List, Third Party Advisory, Broken Link)
- support@hackerone.com (VDB Entry, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-22872?
- CVE-2021-22872 is a medium-severity vulnerability in Revive-Adserver Revive Adserver, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-01-26.
- How severe is CVE-2021-22872?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2021-22872 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.