6.5

CVE-2026-103005: elastic elasticsearch

CVSS: 6.5v3.1MediumAnalyzed
AliasesCGA-44x7-rx56-cv2vCGA-84x8-m2gr-c2mjCGA-g4jh-95cq-9h54
Published 06-10-2026Last modified 06-10-2026
Open JSON

Vulnerability summary

CVE-2026-103005 is a medium (CVSS 6.5) vulnerability in elastic elasticsearch. EPSS estimates a 0.31% chance of exploitation in the next 30 days, higher than 22.4% 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
0.31%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 06-10-2026
    PublishedVulnerability first disclosed.
  2. 06-10-2026
    Last modifiedVulnerability information updated.

Description

Memory Allocation with Excessive Size Value (CWE-789) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated user with connector management privileges could cause the cluster to allocate an uncontrolled amount of memory when connector resources with an excessively large `description` field are created and subsequently accessed, exhausting available heap memory and crashing the affected node.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.31%

Chance of exploitation in the next 30 days

Percentile

22%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

07-10-202621-10-2026
EPSS score
0.31%

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

Chainguard5 products
  • elasticsearch-9.2All versions (No fix recorded)
  • elasticsearch-9.3All versions (No fix recorded)
  • ruby3.3-elasticsearchAll versions (No fix recorded)
  • ruby3.4-elasticsearchAll versions (No fix recorded)
  • ruby4.0-elasticsearchAll versions (No fix recorded)
Wolfi3 products
  • ruby3.3-elasticsearchAll versions (No fix recorded)
  • ruby3.4-elasticsearchAll versions (No fix recorded)
  • ruby4.0-elasticsearchAll versions (No fix recorded)
Elastic1 product
  • elasticsearch≥ 8.12.0, ≤ 8.19.22 | ≥ 9.4.0, ≤ 9.4.7 | ≥ 9.5.0, ≤ 9.5.4 | ≥ 8.12.0, < 8.19.23 | ≥ 9.0.0, ≤ 9.3.8 | ≥ 9.4.0, < 9.4.8 | ≥ 9.5.0, < 9.5.5

3 vendors · 9 products

References

3 links