CVE-2021-22871

low-risk
Published 2021-01-26

Revive Adserver before 5.1.0 permits any user with a manager account to store possibly malicious content in the URL website property, which is then displayed unsanitized in the affiliate-preview.php tag generation screen, leading to a persistent cross-site scripting (XSS) vulnerability.

Do I need to act?

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0.94% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.8/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Revive-Adserver

References (12)

Third Party Advisory http://packetstormsecurity.com/files/161070/Revive-Adserver-5.0.5-Cross-Site-Scr...
Broken Link http://seclists.org/fulldisclosure/2021/Jan/60
Patch https://github.com/revive-adserver/revive-adserver/commit/62a2a0439
Patch https://github.com/revive-adserver/revive-adserver/commit/89b88ce26
Exploit https://hackerone.com/reports/819362
Vendor Advisory https://www.revive-adserver.com/security/revive-sa-2021-001/
Third Party Advisory http://packetstormsecurity.com/files/161070/Revive-Adserver-5.0.5-Cross-Site-Scr...
Broken Link http://seclists.org/fulldisclosure/2021/Jan/60
Patch https://github.com/revive-adserver/revive-adserver/commit/62a2a0439
Patch https://github.com/revive-adserver/revive-adserver/commit/89b88ce26
Exploit https://hackerone.com/reports/819362
Vendor Advisory https://www.revive-adserver.com/security/revive-sa-2021-001/
27
/ 100
low-risk
Severity 19/34 · Moderate
Exploitability 3/34 · Minimal
Exposure 5/34 · Minimal