CVE-2026-72680
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.
- Score
- 6.5 medium
- Published
- 2026-08-13
- Links
- NVD · cve.org · Report wrong data
Matched ports (3)
| Port | Package | Version | Status | Maintainer |
|---|---|---|---|---|
| textproc/kibana92 | kibana92 | 9.2.8 | unaddressed | elastic@FreeBSD.org |
| textproc/kibana93 | kibana93 | 9.3.8 | possibly backported | elastic@FreeBSD.org |
| textproc/kibana94 | kibana94 | 9.4.7 | fixed by update | elastic@FreeBSD.org |
Template for a VuXML entry
Range taken from the CVE record, check it before committing. make newentry in security/vuxml creates the vid.
<vuln vid="FIXME (make newentry)">
<topic>FIXME -- FIXME</topic>
<affects>
<package>
<name>kibana92</name>
<range><lt>9.4.5</lt></range>
</package>
</affects>
<description>
<body xmlns="http://www.w3.org/1999/xhtml">
<p>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.</p>
</body>
</description>
<references>
<cvename>CVE-2026-72680</cvename>
<url>https://nvd.nist.gov/vuln/detail/CVE-2026-72680</url>
</references>
<dates>
<discovery>2026-08-13</discovery>
<entry>2026-10-26</entry>
</dates>
</vuln>