What is GHSA-hcw2-vpp7-52v9?

GHSA-hcw2-vpp7-52v9 is a security advisory published by GitHub Security Advisories with Medium severity. Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive...

Which CVE IDs does GHSA-hcw2-vpp7-52v9 cover?

GHSA-hcw2-vpp7-52v9 covers the following CVE IDs: CVE-2026-42399. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-hcw2-vpp7-52v9?

GHSA-hcw2-vpp7-52v9 has a CVSS v3 base score of 6.5, published by GitHub Security Advisories.

GHSA-hcw2-vpp7-52v9MediumCVSS 6.5

Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive...

Vendor

GitHub Security Advisories

Published

May 28, 2026

Last Modified

May 28, 2026

🔗 CVE IDs covered (1)

CVE-2026-42399 →

📋 Description

Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated low-privileged user can cause Kibana to consume exponentially increasing amounts of memory by submitting a specially crafted Timelion visualization expression containing deeply chained function calls. The resulting data structure grows without bound, exhausting available memory and causing the Kibana service to crash and become unavailable to all users.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-42399
https://discuss.elastic.co/t/kibana-8-19-16-and-9-3-5-security-update-esa-2026-36/386556
https://github.com/advisories/GHSA-hcw2-vpp7-52v9