CVE-2026-72628CWE-409

CVE-2026-72628

Medium · published September 2, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
39.8
In the wild
Unconfirmed
What it is

Improper Handling of Highly Compressed Data (CWE-409) in Kibana can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user holding Streams management privileges could supply specially crafted content that expands to a far larger volume of data during processing, exhausting the memory available to Kibana. The Kibana process is terminated by the host and remains unavailable to all users until the service is restarted.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00472 · 39.8th percentile
Weakness
CWE-409 · Improper Handling of Highly Compressed Data (Data Amplification)
Published
2026-09-02T00:17Z
Affected products (3)
ProductVersionsFixed in
elastic/kibana≥ 8.19.0, < 8.19.218.19.21
elastic/kibana≥ 9.0.0, < 9.4.69.4.6
elastic/kibana≥ 9.5.0, < 9.5.29.5.2
References (1)
https://discuss.elastic.co/t/kibana-8-19-21-9-4-6-9-5-2-security-update-esa-2026-125/390090 · [email protected]
EPSS history
Timeline
  • 03 SEP 03:32Z
    EPSS moved — → 0%
    epss
  • 01 SEP 19:20Z
    Improper Handling of Highly Compressed Data in Kibana Leading to Denial of Service
    cvelistv5