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revive-adserver

HackerOne community member Jad Ghamloush (0xjad) has reported an authorization bypass vulnerability in the `tracker-delete.php` script of Revive Adserver. Users with permissions to delete trackers are mistakenly allowed to delete trackers owned by other accounts.

CVE-2026-21641 is a high-severity authorization bypass vulnerability identified in Revive Adserver version 6, a widely used open-source ad serving platform. The flaw exists in the tracker-delete.php script, which handles deletion requests for tracking data. Normally, users with deletion permissions should only be able to delete trackers associated with their own accounts. However, due to improper authorization checks, users can delete trackers owned by other accounts, bypassing intended access controls. This vulnerability impacts the integrity of tracking data by allowing unauthorized deletion, which can disrupt ad campaign analytics and reporting. The CVSS 3.0 score of 7.1 reflects a network attack vector (AV:N), low attack complexity (AC:L), requiring privileges (PR:L) but no user interaction (UI:N), with no confidentiality impact (C:N), high integrity impact (I:H), and low availability impact (A:L). Although no public exploits are currently known, the vulnerability could be exploited by malicious insiders or attackers who have gained limited access to the system. The flaw highlights the importance of robust authorization checks in multi-tenant environments like ad servers. Since Revive Adserver is used by many digital marketing and advertising organizations, exploitation could lead to data tampering, loss of trust in analytics, and operational disruptions. The vulnerability was responsibly disclosed by a HackerOne community member and is publicly documented, enabling defenders to prepare mitigations and patches.

Detailed information about CVE-2026-21641: Vulnerability in Revive Revive Adserver affecting Revive Revive Adserver. Get real-time updates, technical details, a

CVE-2026-21641: Vulnerability in Revive Revive Adserver - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2026-21641: Vulnerability in Revive Revive Adserver

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