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NVD / CVE Program· CNA elastic

CVE-2026-72643: Incorrect Authorization in Kibana Agent Builder Leading to Disclosure and Tampering of Private Agents

HighCVSS 7.1 · v3.1—No exploit No fix recorded

Noroxi assessment

Priority: Monitor (action score 28/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.37% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

Published
Aug 13, 2026
Updated
Sep 3, 2026
EPSS
0.3% · 32th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · elastic
7.1
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-72643

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
elastickibana

Versions reported by the vendor

Affected version ranges reported by the assigning authority (elastic). Independent of NVD's CPE analysis and usually ahead of it.

  • Elastic Kibana

    • 9.5.0affected
    • 9.4.0 and later · up to and including 9.4.4affected · semver

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • elastic kibana9.4.0 and later · before 9.4.5
  • elastic kibana9.5.0

Same product

elastic: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-7609Kibana versions before 5.6.15 and 6.6.1 contain an arbitrary code execution flaw in the Timelion visualizer.KEV
    99Now
  • CVE-2018-17246Kibana versions before 6.4.3 and 5.6.13 contain an arbitrary file inclusion flaw in the Console plugin.
    64This week
  • CVE-2025-25014Kibana arbitrary code execution via prototype pollution
    46Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-72631Aug 13, 2026 · Improper Privilege Management in Kibana Fleet Leading to Over-Scoped Elastic Agent API Keys
    26Monitor
  • ← EarlierCVE-2026-72632Aug 13, 2026 · Observable Discrepancy in Kibana Fleet Leading to Disclosure of Elastic Agent Elasticsearch API Keys
    28Monitor
  • Later →CVE-2026-72650Aug 13, 2026 · Authorization Bypass Through User-Controlled Key in Kibana Leading to Information Disclosure
    17Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-6313719 days apartIncorrect Authorization in Kibana Leading to Privilege Escalation
    33Monitor
  • CVE-2026-7858321 days apartIncorrect Authorization in Kibana Leading to Privilege Escalation
    32Monitor
  • CVE-2026-8230221 days apartIncorrect Authorization in Kibana Leading to Unauthorized Configuration Modification
    32Monitor
  • CVE-2026-726720 days apartIncorrect Authorization in Kibana Leading to Disclosure of Elastic Defend Endpoint Event Data
    30Monitor
  • CVE-2026-726300 days apartIncorrect Authorization in Kibana Fleet Leading to Privilege Escalation
    28Monitor
  • CVE-2026-8229921 days apartIncorrect Authorization in Kibana Leading to Information Disclosure
    26Monitor

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Not on record for this CVE: patch commit or PR link · researcher credit.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
low · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-863 · Incorrect Authorization

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records