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Fencer Vulns
high 7.1

CVE-2026-56147 json

Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Information Disclosure and Case Attachment Integrity Compromise

published 2026-07-21 3 mo ago modified 2026-10-24 15 d ago also BIT-elk-2026-56147 , BIT-kibana-2026-56147 , EUVD-2026-46403

cvss
7.1
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 28%
public exploits
0
none known

Summary

Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to unauthorized information disclosure and case attachment integrity compromise via Privilege Abuse (CAPEC-122). An inconsistency in Kibana's file access authorization logic allows a low-privileged authenticated user to retrieve, modify, and delete case attachments that belong to feature areas they are not authorized to access. Because the access control check and the resource retrieval use different resolution mechanisms, an authenticated attacker with limited file management permissions can obtain the contents of, modify, or delete protected case attachments — such as those associated with Security Solution cases — without holding the privileges required to access those features.

Patch / fix

  • bitnami elk 8.19.18, 9.3.7, 9.4.3
  • bitnami kibana 8.19.18, 9.3.7, 9.4.3
  • elastic kibana 8.19.18, 9.3.7, 9.4.3
  • elasticsearch kibana 8.19.18, 9.3.7, 9.4.3

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

0.35% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).

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
>=8.7.0, <8.19.18
>=9.0.0, <9.3.7
>=9.4.0, <9.4.3
8.19.18
9.3.7
9.4.3
bitnami kibana
>=8.7.0, <8.19.18
>=9.0.0, <9.3.7
>=9.4.0, <9.4.3
8.19.18
9.3.7
9.4.3

Affected products

  • Elastic Kibana

Classification

Weakness
  • CWE-639 Authorization Bypass Through User-Controlled Key

References

Sources

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.