CVE-2026-21640: Low severity Aquaplatform Revive Adserver vulnerability
Published Jan 20, 2026
·Updated
HackerOne community member Faraz Ahmed (PakCyberbot) has reported a format string injection in the Revive Adserver settings. When specific character combinations are used in a setting, the admin user console could be disabled due to a fatal PHP error.
Affected Software
1 affected component
Aquaplatform Revive Adserver>=6.0.0<=6.0.4
Event History
Jan 20, 2026
CVE Published
via MITRE·08:48 PM
Data Sourced
via MITRE·08:48 PM
DescriptionSeverity
Data Sourced
via NVD·09:16 PM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-21640?
CVE-2026-21640 is classified as a medium severity vulnerability.
2
How do I fix CVE-2026-21640?
To fix CVE-2026-21640, update the Revive Adserver to a version newer than 6.0.4.
3
What impact does CVE-2026-21640 have on my Revive Adserver installation?
CVE-2026-21640 can cause the admin user console to become disabled due to a fatal PHP error.
4
Which versions of Revive Adserver are affected by CVE-2026-21640?
CVE-2026-21640 affects Revive Adserver versions from 6.0.0 to 6.0.4.
5
Who reported CVE-2026-21640?
CVE-2026-21640 was reported by HackerOne community member Faraz Ahmed (PakCyberbot).