Executive brief
Revive Adserver, a popular open-source platform for managing digital advertising, contains a security flaw in its programming interface (API). This vulnerability allows certain users to incorrectly reassign advertising entities to different parent accounts, potentially disrupting campaign management and data organization. While the risk is limited to specific configurations or in combination with other flaws, it could lead to inconsistent data and unauthorized administrative changes within the platform.
Technical details
A missing access control check exists in the XML-RPC API of Revive Adserver versions 6.0.6 and earlier. Specifically, various 'modify' methods fail to validate whether a user has the appropriate permissions to reassign an entity to a new parent entity. This vulnerability is categorized as Improper Access Control (CWE-284). An attacker with low-privileged API access—either through a secondary vulnerability like CVE-2026-34917 or via third-party extensions—can exploit this to create inconsistent ownership relationships. The vendor has addressed this by adding validation checks for parent entities in the affected API methods.
Affected products
- Revive Adserver 6.0.6 and earlier
Timeline
- 2026-06-23: disclosed
- 2026-06-23: advisory