MediumVulnerabilityLLM-specific

CVE-2026-94625: vLLM resource exhaustion in MooncakeConnector through rejected prefill requests

Source: NVD(opens in a new tab)
Identifier: CVE-2026-94625
Published: September 21, 2026
Record updated: October 9, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.5%

Summary

CVE-2026-94625 affects vLLM through 0.29.0 in MooncakeConnector. Rejected prefill requests leave ownerless transfer placeholders that are never reclaimed, so an attacker can send such requests to exhaust sender task pools. Valid requests can then be delayed by up to 480 seconds while health checks keep returning success.

Mitigation

The source does not state a fix yet. Check the original advisory for updates.

Details

Scores and exploitation

CVSS score: 5.3(medium)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector: network
Attack complexity: low
Privileges required: none
User interaction: none
EPSS: 0.5%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on November 9, 2026.
Disclosure date: September 21, 2026

Weaknesses and techniques

Weakness (CWE): CWE-772

Classification

Attack type: Denial of service
Attack sophistication: Trivial
AI component targeted: Inference
Impact: Availability
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-94625

First tracked: September 21, 2026 at 08:10 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 95% (self-assessed)

Topics

Inference infrastructure

Summary

Mitigation

Topics

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