Executive brief
Revive Adserver, a popular open-source ad serving platform, contains a security flaw in how it manages permissions for linking advertisements to display areas. A user with low-level access can bypass security checks to link their own ad zones to banners or campaigns belonging to other managers on the same system. This can lead to unauthorized changes in how ads are distributed and cause data inconsistencies across different accounts on the platform.
Technical details
An improper access control vulnerability (CWE-284) exists in Revive Adserver versions 6.0.6 and earlier. The flaw is located in the zone-include.php script and the corresponding API endpoints, which fail to perform adequate ownership validation when linking banners or campaigns to a zone. An authenticated attacker with low privileges can exploit this by submitting requests to link their managed zones to assets (banners/campaigns) belonging to different manager accounts on the same instance. This results in inconsistent ownership relationships and unauthorized modification of ad delivery configurations. The issue has been addressed by adding ownership validation to ensure assets can only be linked to zones managed by the same account.
Affected products
- Revive Adserver 6.0.6 and earlier
Timeline
- 2026-06-23: advisory: NVD publication date
- 2026-06-23: disclosed: HackerOne report published