October 28, 2026

CVE Watchtower

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CVE-2026-103005NVD

Vulnerability Summary

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.
Severity Level
MEDIUM(6.5)
Published Date
Oct 6, 2026
Last Modified
Oct 9, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.31%Probability
Root Weakness (CWE)
CWE-789: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v3.1 Base Metrics — Score 6.5 (MEDIUM)
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Elastic Elasticsearch >= 8.12.0 and < 8.19.23
  • Elastic Elasticsearch >= 9.0.0 and <= 9.3.8
  • Elastic Elasticsearch >= 9.4.0 and < 9.4.8
  • Elastic Elasticsearch >= 9.5.0 and < 9.5.5
Patched Versions
  • Elastic Elasticsearch 8.19.23
  • Elastic Elasticsearch 9.4.8
  • Elastic Elasticsearch 9.5.5
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🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References