4.3

CVE-2026-72685: elastic elasticsearch Inefficient Algorithmic Complexity

CVSS: 4.3v3.1MediumAnalyzed
AliasesCGA-65p9-x52c-g6xrCGA-9x5h-m456-c5pgCGA-mgwj-f6jx-h65w
Published 13-08-2026Last modified 13-08-2026
Open JSON

Vulnerability summary

CVE-2026-72685 is a medium (CVSS 4.3) Inefficient Algorithmic Complexity vulnerability in elastic elasticsearch. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 29.3% of scored vulnerabilities.

Overall risk
17/100
0100
Low · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.37%
0%100%
Low · +0.10 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 13-08-2026
    PublishedVulnerability first disclosed.
  2. 13-08-2026
    Last modifiedVulnerability information updated.

Description

A flaw in Elasticsearch allows a low-privileged authenticated user who can index documents to submit a single small document containing a crafted user-supplied input. Processing one such document occupies a worker thread from a bounded pool for a disproportionate amount of time, degrading the availability of indexing operations on the affected node.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.37%

Chance of exploitation in the next 30 days

Percentile

29%

Versus all other CVEs

30-day change

+0.10 pp

From 0.27% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.37%

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

Chainguard2 products
  • elasticsearch-9.2All versions (No fix recorded)
  • elasticsearch-9.3All versions (No fix recorded)
Elastic1 product
  • elasticsearch≥ 8.0.0, ≤ 8.19.19 | ≥ 9.0.0, ≤ 9.4.4 | ≥ 8.0.0, < 8.19.20 | ≥ 9.0.0, < 9.4.5

2 vendors · 3 products

References

3 links