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PatchSiren cyber security CVE debrief

CVE-2026-56146 Elastic CVE debrief

CVE-2026-56146 is an Improper Access Control vulnerability in Kibana, allowing a low-privileged authenticated user with read-only Security Solution access to perform write operations on watchlist data. This could lead to unauthorized modification of Entity Analytics Watchlist configuration and potential information disclosure. The vulnerability has a CVSS score of 5.4 and a severity of MEDIUM. Affected users should review and adjust their Kibana configurations, especially Entity Analytics Watchlist settings, and restrict access to Security Solution features for low-privileged users.

Vendor
Elastic
Product
Kibana
CVSS
MEDIUM 5.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-21
Original CVE updated
2026-08-06
Advisory published
2026-07-21
Advisory updated
2026-08-06

Who should care

Users of Kibana with Security Solution access, especially those with low-privileged authenticated users, should be aware of this vulnerability and take necessary precautions to restrict access and monitor for unusual activity.

Technical summary

CVE-2026-56146 is an Improper Access Control vulnerability in Kibana, allowing a low-privileged authenticated user with read-only Security Solution access to perform write operations on watchlist data. This could lead to unauthorized modification of Entity Analytics Watchlist configuration and potential information disclosure. The vulnerability has a CVSS score of 5.4 and a severity of MEDIUM. Users with Security Solution access, especially those with low-privileged authenticated users, should be aware of this vulnerability and take necessary precautions.

Defensive priority

Medium priority due to potential for unauthorized data modification and disclosure.

Recommended defensive actions

  • Inventory and verify Kibana configurations, especially Entity Analytics Watchlist settings.
  • Restrict access to Security Solution features for low-privileged users.
  • Monitor for unusual activity related to watchlist data modifications.
  • Apply vendor patches or updates as soon as available.
  • Review and adjust user privileges and access controls.
  • Perform regular security audits and vulnerability assessments.
  • Implement additional monitoring and logging to detect potential security incidents.

Evidence notes

The CVE record was published on 2026-07-21T20:17:02.613Z and has not been modified since then. The NVD entry is currently Awaiting Analysis. The vulnerability is related to CWE-284 and has a CVSS vector of CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N. There is limited information available about the vulnerability, and defenders should verify the affected scope and severity with the vendor.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-56146 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-56146

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-56146 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-56146

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.