CVE-2026-21641 Missing authorization in Revive Adserver

High 7.1 Published 20 Jan 2026 Updated 21 Jan 2026

Users with delete permissions can delete trackers belonging to other accounts due to missing authorization checks in Revive Adserver.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-21641?

CVE-2026-21641 is a high-severity missing authorization vulnerability in Revive Adserver, published on 20 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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.

Weakness: CWE-285

Which versions are affected by CVE-2026-21641?

It affects 1 product.

Products include Aquaplatform Revive Adserver.

How do I fix CVE-2026-21641?

No fix has been published for CVE-2026-21641 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-21641 being exploited?

There is no known exploitation of CVE-2026-21641 in the wild and no public exploit code.

Sources

Also known as GHSA-2prx-vw7r-hjgr.