CVE-2026-63099 TheHive 4.1.24 Broken Object Level Authorization via Attachment Download Endpoints
Authenticated users can download attachments from other organizations due to missing authorization checks in TheHive.
- 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-2026-63099?
CVE-2026-63099 is a high-severity missing authorization vulnerability in TheHive-Project TheHive, published on 17 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
TheHive through 4.1.24 contains a broken object-level authorization vulnerability in the attachment download endpoints that allows any authenticated user to access attachments belonging to other organizations by supplying a content-hash identifier. Attackers can exploit the missing organization-scoped authorization check in AttachmentSrv.visible, which is implemented as a pass-through traversal, to download arbitrary attachments.
Weakness: CWE-639
Which versions are affected by CVE-2026-63099?
How do I fix CVE-2026-63099?
No fix has been published for CVE-2026-63099 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-2026-63099 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-63099 exists.
Sources
Also known as GHSA-6392-9v2x-r546.