Allocation of Resources Without Limits or Throttling in Elasticsearch Leading to Denial of Service
Priority LOW 23CWE-770Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-770.
Summary
Allocation of Resources Without Limits or Throttling (CWE-770) in Elasticsearch can lead to a denial of service via Excessive Allocation (CAPEC-130). A user with elevated privileges can submit a specially crafted machine learning request that causes excessive memory consumption, which may render the affected node unavailable.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.005 43rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Elastic | Elasticsearch | 9.4.0 – 9.4.2; 9.0.0 – 9.3.5; 8.0.0 – 8.19.16 | — | No fix listed | CNA |
- Elasticsearch VendorElastic Affected 9.4.0 – 9.4.2; 9.0.0 – 9.3.5; 8.0.0 – 8.19.16 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:* | 8.0.0 to before 8.19.17; 9.0.0 to before 9.3.6; 9.4.0 to before 9.4.3 | Vulnerable | Elastic |
- cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:* Versions 8.0.0 to before 8.19.17; 9.0.0 to before 9.3.6; 9.4.0 to before 9.4.3 Vulnerable ·Elastic
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-56149
- 2026-10-03 Alias added: GHSA-p6pw-6f2m-xxpg
References
More Elasticsearch vulnerabilities
- TI-2015-01295 The Groovy scripting engine in Elasticsearch before 1.3.8 and 1.4.x before 1.4.3 allows… KEVCVSS 3.1CRITICAL 9.8
- TI-2014-02491 The default configuration in Elasticsearch before 1.2 enables dynamic scripting, which… KEVCVSS 3.1HIGH 8.1
- TI-2023-15037 Elasticsearch StackOverflow vulnerability CVSS 3.1HIGH 7.5
- TI-2021-05135 Information disclosure in Elasticsearch CVSS 3.1MEDIUM 6.5
- TI-2021-05136 All versions of Elastic Cloud Enterprise has the Elasticsearch “anonymous” user enabled… CVSS 3.1HIGH 7.5
- TI-2015-04530 Elasticsearch before 1.6.1 allows remote attackers to execute arbitrary code via… CVSS 3.0CRITICAL 9.8
Sources
- CVE-2026-56149 · CVE Program
- CVE-2026-56149 · NVD
- FIRST EPSS
- GHSA-p6pw-6f2m-xxpg · GitHub Advisory Database · CC BY 4.0
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