CVE catalog
CVE-2026-56149
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 speci
- Severity
- Medium · CVSS 4.9
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.50% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | elasticsearch | Not reported | 8.19.17 | fixed |
| Cpe | elasticsearch | Not reported | 9.3.6 | fixed |
| Cpe | elasticsearch | Not reported | 9.4.3 | fixed |
| Ubuntu | elasticsearch | 16.04 | 1.6.2+dfsg-1 | vulnerable |
| Ubuntu | elasticsearch | 16.04 | 1.7.3+dfsg-1 | vulnerable |
| Ubuntu | elasticsearch | 16.04 | 1.7.3+dfsg-2 | vulnerable |
| Ubuntu | elasticsearch | 16.04 | 1.7.3+dfsg-3 | vulnerable |
| Cpe | elasticsearch | Not reported | 9.4.3 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | elasticsearch | cpe | Not reported | 8.19.17 | Not reported | Not reported | Not reported |
| Cpe | elasticsearch | cpe | Not reported | 9.3.6 | Not reported | Not reported | Not reported |
| Cpe | elasticsearch | cpe | Not reported | 9.4.3 | Not reported | Not reported | Not reported |
| Cpe | elasticsearch | cpe | Not reported | 9.4.3 | Not reported | NVD-CVE-2026-56149 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://discuss.elastic.co/t/elasticsearch-8-19-17-9-3-6-9-4-3-security-update-esa-2026-43]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-56149]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-56149]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2180.json]
[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]