CVE-2026-72643 json
Incorrect Authorization in Kibana Agent Builder Leading to Disclosure and Tampering of Private Agents
published 2mo ago modified 2mo ago also BIT-elk-2026-72643 , BIT-kibana-2026-72643 , EUVD-2026-58288
- cvss
- 7.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 32%
- public exploits
- 0
- none known
Summary
Kibana Agent Builder determines whether a caller owns a private agent by comparing a stable user identifier when one is recorded, and falling back to a comparison of the username when it is not. A username is not unique across Elasticsearch authentication realms, so two distinct principals that share a username in different realms are treated as the same owner. This discloses the configuration and instructions of an agent the caller does not own, and allows that agent to be altered or removed.
Patch / fix
- bitnami elk 9.4.5, 9.5.1
- bitnami kibana 9.4.5, 9.5.1
- elastic kibana 9.4.5, 9.5.1
- elasticsearch kibana 9.4.5, 9.5.1
Is CVE-2026-72643 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2mo ago
Exploit prediction
0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N |
| OSV | 3.1 | 7.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | elk | >=9.4.0, <9.4.5 >=9.5.0, <9.5.1 |
9.4.5 9.5.1 |
| bitnami | kibana | >=9.4.0, <9.4.5 >=9.5.0, <9.5.1 |
9.4.5 9.5.1 |
Affected products
- Elastic Kibana
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
discuss.elastic.co
/t/kibana-9-4-5-9-5-1-security-update-esa-2026-124/389538
vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-72643
web
Sources
- CVE List CVE-2026-72643
- NVD CVE-2026-72643
- OSV BIT-elk-2026-72643
- OSV BIT-kibana-2026-72643
Fencer Intel 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.