6.5

CVE-2026-49090: elastic elasticsearch Uncontrolled Resource Consumption

CVSS: 6.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-49090
Published 01-07-2026Last modified 01-07-2026
Open JSON

Vulnerability summary

CVE-2026-49090 is a medium (CVSS 6.5) Uncontrolled Resource Consumption vulnerability in elastic elasticsearch. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 35.1% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.42%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 01-07-2026
    PublishedVulnerability first disclosed.
  2. 01-07-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.42%

Chance of exploitation in the next 30 days

Percentile

35%

Versus all other CVEs

30-day change

0.00 pp

From 0.42% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.42%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Elastic1 product
  • elasticsearch≥ 8.0.0, ≤ 8.14.3 | ≥ 7.0.0, ≤ 7.17.23 | ≥ 7.0.0, < 7.17.24 | ≥ 8.0.0, < 8.15.0
Ubuntu1 product
  • elasticsearchAll versions (No fix recorded)

2 vendors · 2 products

References

3 links