CVE-2026-56143: CWE-770 Allocation of Resources Without Limits or Throttling in Elastic Elasticsearch
Description
CVE-2026-56143 is a vulnerability in Elasticsearch involving allocation of resources without limits or throttling (CWE-770). A user with elevated privileges can send a crafted request that causes excessive memory consumption, potentially leading to denial of service by making the affected node unavailable. The CVSS score is 4.9, indicating medium severity. There is no information about available patches or vendor advisories confirming remediation. No known exploits are reported in the wild.
CVSS v3.1
Score 4.9medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Elasticsearch allows a privileged user to trigger excessive memory allocation by submitting specially crafted requests. This lack of resource allocation limits or throttling can cause denial of service conditions by exhausting memory resources on the affected node. The issue is categorized under CWE-770 and has a CVSS 3.1 base score of 4.9 (medium severity). No patch or official fix information is provided in the available data.
Potential Impact
An attacker with elevated privileges can cause excessive memory consumption on an Elasticsearch node, potentially rendering the node unavailable and causing denial of service. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict elevated privileges to trusted users only to reduce risk of exploitation.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-vvr8-mhcc-gx9g
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-56143"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a984588acd9273b496adcd7
Added to database: 09/02/2026, 15:49:28 UTC
Last enriched: 09/07/2026, 21:24:04 UTC
Last updated: 10/18/2026, 18:48:21 UTC
Views: 30
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.