CVE-2026-72680 Authorization Bypass Through User-Controlled Key in Kibana Agent Builder Leading to Unauthorized Data Modification
Authenticated users can overwrite other users' Agent Builder conversations by manipulating identifiers, causing permanent data loss and reassignment.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-72680?
CVE-2026-72680 is a medium-severity missing authorization vulnerability in Elastic Kibana, published on 13 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Kibana Agent Builder A2A JSON-RPC API endpoint derives the identifier of a stored conversation from a user-supplied input, and the ownership check on that identifier does not distinguish between a conversation that does not exist and one that exists but belongs to another user. As a result, an authenticated user holding only the Agent Builder read privilege can supply an identifier already in use by another user in the same space and cause that user's conversation to be replaced and reassigned to the requesting account. The original owner permanently loses access to the conversation and its history. The impact is limited to loss of integrity and availability of the affected conversation; the attacker does not read the overwritten content.
Weakness: CWE-639
Which versions are affected by CVE-2026-72680?
2 open source packages ship an affected version, including kibana and elk. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
kibana Bitnami | From 9.2.0 | 9.4.5 |
elk Bitnami | From 9.2.0 | 9.4.5 |
Products include Elastic Kibana.
How do I fix CVE-2026-72680?
Upgrade kibana to 9.4.5 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-72680 being exploited?
There is no known exploitation of CVE-2026-72680 in the wild and no public exploit code.
Other vulnerabilities in Elastic Kibana
Sources
Also known as BIT-elk-2026-72680, BIT-kibana-2026-72680, GHSA-q63r-rpw5-hvr9, MINI-gj4v-qw5p-3836, MINI-hpmg-h6q6-v4mx, MINI-qxm8-9424-c3mj.