CVE-2026-49090
Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service
Description
Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user can submit a specially crafted bulk request that causes sustained high CPU consumption, which can render the affected node unable to process requests.
INFO
Published Date :
July 1, 2026, 6:16 p.m.
Last Modified :
July 2, 2026, 2:43 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | 271b6943-45a9-4f3a-ab4e-976f3fa05b5a | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Elasticsearch to the latest version.
- Configure resource limits for bulk requests.
- Monitor system CPU and memory usage.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-49090.
| URL | Resource |
|---|---|
| https://discuss.elastic.co/t/elasticsearch-7-17-24-8-15-0-security-update-esa-2026-52 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-49090 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-49090
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-49090 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-49090 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 02, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:* versions from (including) 8.0.0 up to (excluding) 8.15.0 *cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:* versions from (including) 7.0.0 up to (excluding) 7.17.24 Added Reference Type Elastic: https://discuss.elastic.co/t/elasticsearch-7-17-24-8-15-0-security-update-esa-2026-52 Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 01, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-49090', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-01T17:56:23.912486Z'} -
New CVE Received by [email protected]
Jul. 01, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Elastic', 'product': 'Elasticsearch', 'versions': [{'status': 'affected', 'version': '8.0.0', 'versionType': 'semver', 'lessThanOrEqual': '8.14.3'}, {'status': 'affected', 'version': '7.0.0', 'versionType': 'semver', 'lessThanOrEqual': '7.17.23'}], 'defaultStatus': 'unaffected'}] Added Description Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user can submit a specially crafted bulk request that causes sustained high CPU consumption, which can render the affected node unable to process requests. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-400 Added Reference https://discuss.elastic.co/t/elasticsearch-7-17-24-8-15-0-security-update-esa-2026-52