CVE-2026-63259: Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to information disclosure via user-supplied identifiers that reference scheduled query result data fro

mediumCVSS 4.3CVE-2026-63259

Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to information disclosure via user-supplied identifiers that reference scheduled query result data from Kibana Spaces the requester is not authorized to access.

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-2026-63259

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-2026-632590.19% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 8% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-63259	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 Authorization Bypass

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.

criticalCVE-2026-67342: ArcadeDB versions before 26.7.2 contain an authorization bypass vulnerability in HTTP handlers…nvd · 2026-08-01
criticalCVE-2026-67330: @better-auth/scim (a better-auth plugin) versions >= 1.4.0-beta.27 through = 1.7.0-beta.0 thro…nvd · 2026-08-01
highCVE-2026-67329: @better-auth/stripe versions >= 1.4.11 and = 1.7.0-beta.0 and < 1.7.0-beta.10, contain an auth…nvd · 2026-08-01
mediumCVE-2026-11995: The Gutena Forms – Contact Form, Survey Form, Feedback Form, Booking Form, and Custom Form Bui…nvd · 2026-08-01
mediumCVE-2026-10782: The RealHomes Memberships plugin for WordPress is vulnerable to authorization bypass in all ve…nvd · 2026-08-01
unknownCVE-2026-14538: An improper authorization and security-boundary bypass vulnerability in the bigquery-execute-s…nvd · 2026-07-31