CVE-2026-72680 json
Authorization Bypass Through User-Controlled Key in Kibana Agent Builder Leading to Unauthorized Data Modification
published 2026-08-13 2 mo ago modified 2026-09-08 2 mo ago also BIT-elk-2026-72680 , BIT-kibana-2026-72680 , EUVD-2026-58254
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 20%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- bitnami elk 9.4.5
- bitnami kibana 9.4.5
- elastic kibana 9.4.5
- elasticsearch kibana 9.4.5
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L |
| OSV | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | elk | >=9.2.0, <9.4.5 |
9.4.5 |
| bitnami | kibana | >=9.2.0, <9.4.5 |
9.4.5 |
Affected products
- Elastic Kibana
Classification
- Weakness
-
- CWE-639 Authorization Bypass Through User-Controlled Key
References
-
discuss.elastic.co
/t/kibana-9-4-5-security-update-esa-2026-82/389535
vendor-advisory, mitigation, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-72680
web
Sources
- CVE List CVE-2026-72680
- NVD CVE-2026-72680
- OSV BIT-elk-2026-72680
- OSV BIT-kibana-2026-72680
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.