SB20260925251 - Multiple vulnerabilities in Elasticsearch

Main Vulnerability Database SB20260925251

SB20260925251 - Multiple vulnerabilities in Elasticsearch

Published: September 25, 2026

Security Bulletin ID SB20260925251

CSH Severity

Low

Patch available

YES

Number of vulnerabilities 7

Exploitation vector Remote access

Highest impact Denial of service

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 7 vulnerabilities.

1) Resource exhaustion (CVE-ID: CVE-2026-94396)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote user to cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in Elasticsearch when processing requests. A remote user can cause excessive allocation to cause a denial of service.

All configurations are affected.

2) Resource exhaustion (CVE-ID: CVE-2026-94397)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote user to cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in Elasticsearch when allocating excessive resources. A remote user can trigger excessive allocation to cause a denial of service.

All configurations are affected.

3) Resource exhaustion (CVE-ID: CVE-2026-94399)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote user to cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in Elasticsearch when processing requests. A remote user can trigger excessive allocation to cause a denial of service.

All configurations are affected.

4) Resource exhaustion (CVE-ID: CVE-2026-94398)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote user to cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in Elasticsearch when allocating excessive resources. A remote user can trigger excessive allocation to cause a denial of service.

5) Resource exhaustion (CVE-ID: CVE-2026-82300)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote user to cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in Elasticsearch index analysis APIs when invoking index analysis APIs. A remote user can cause excessive allocation to cause a denial of service.

6) Resource exhaustion (CVE-ID: CVE-2026-94408)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote user to cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in Elasticsearch when allocating excessive resources. A remote privileged user can trigger excessive resource allocation to cause a denial of service.

All configurations are affected.

7) Resource exhaustion (CVE-ID: CVE-2026-82294)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote user to cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in Elasticsearch when performing analytical aggregation searches. A remote user can cause excessive allocation to cause a denial of service.

Only configurations with analytical aggregation search capabilities enabled are vulnerable.

Remediation

Install update from vendor's website.

References