CVE-2026-63145: Incorrect Authorization (CWE-863) in Kibana can lead to integrity compromise of Machine Learning audit and notification records via Accessing Functionality Not Properly Constrained

mediumCVSS 4.3CVE-2026-63145

Incorrect Authorization (CWE-863) in Kibana can lead to integrity compromise of Machine Learning audit and notification records via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). A vulnerability exists in Kibana's Machine Learning functionality where a Machine Learning management endpoint performs an insufficient authorization check. The endpoint validates only a coarse privilege level but does not verify that the requesting user has access to the specific Machine Learning job or notification resources provided in the request. As a result, a low-privileged user with Machine Learning access in any Kibana space can manipulate Machine Learning audit and notification records for arbitrary jobs—including jobs in other spaces or belonging to other users—by leveraging Kibana's internally elevated credentials to write to restricted Machine Learning system indices that the user cannot access directly.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: medium — CVSS 4.3
Published: 2026-07-21
Last updated: 2026-07-22
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-63145

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-631450.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-63145	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

medium[NEW] [medium] Kibana: Multiple vulnerabilitiescert-bund
unknownMultiple vulnerabilities in Elastic products (July 22, 2026)cert-fr-avis

Recent advisories for Incorrect Authorization

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

highCVE-2026-18394: Incorrect authorization in the http_request tool in Strands Agents Tools before 0.8.2 might al…nvd · 2026-07-31
unknownCVE-2026-18394 - Incorrect authorization in Strands Agents Tools http_request toolaws · 2026-07-31
unknownCVE-2026-14537: Incorrect Authorization in the direct HTTP API tool invocation endpoint in Google mcp-toolbox …nvd · 2026-07-31
criticalCVE-2026-48449: Adobe Campaign Classic (ACC) is affected by an Incorrect Authorization vulnerability that coul…nvd · 2026-07-30
unknownCVE-2026-44944: An Incorrect Authorization vulnerability in open-iscsi allows unprivilidged local users to use…nvd · 2026-07-29
highCVE-2026-48396: Bridge is affected by an Incorrect Authorization vulnerability that could result in arbitrary …nvd · 2026-07-28