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TI-2026-40060 Aliases CVE-2026-55514GHSA-33cg-gxv8-3p8g

vLLM denial of service via prompt embeds on M-RoPE models

Priority LOW 32CWE-617Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 2 fixed, 3 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-617.

Summary

vLLM is a library for LLM inference and serving. From 0.12.0 to before 0.24.0, sending a pure prompt embeds payload in a /v1/completions request with a model using M-RoPE causes EngineCore to fail an assertion and fatally crash, shutting down the entire server application. Any remote user who is authorized to make a /v1/completions request can make such a request and induce a crash. This issue is fixed in version 0.24.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00665 52nd percentileScored 2026-11-07
Fix Partial vllm (vllm-project): 0.24.0vllm (PyPI): 0.24.0Red Hat: 6 advisoriesRed Hat: 2 fixed, 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
vllm-projectvllm0.12.0 to before 0.24.00.24.0Patch availableCNA
—vllm (PyPI)0.12.0 to before 0.24.00.24.0Patch availableGHSA-33cg-gxv8-3p8g
  • vllm Vendorvllm-project Affected 0.12.0 to before 0.24.0 Fixed in 0.24.0 Patch available CNA
  • vllm (PyPI) Vendor— Affected 0.12.0 to before 0.24.0 Fixed in 0.24.0 Patch available GHSA-33cg-gxv8-3p8g

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*0.12.0 to before 0.24.0VulnerablevLLM
  • cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:* Versions 0.12.0 to before 0.24.0 Vulnerable ·vLLM

Remediation

  • Fix · CNA vllm (vllm-project) Fixed in 0.24.0
  • Fix · GHSA-33cg-gxv8-3p8g vllm (PyPI) Fixed in 0.24.0 Advisory →

Red Hat 6 advisories

  • RHSA-2026:90440 Released 2026-10-26 · Red Hat rating Important
    Red Hat Enterprise Linux AI 3.4.6 security update
    • Red Hat Enterprise Linux AI 3.4 registry.redhat.io/rhelai3/bootc-aws-cuda-rhel9, registry.redhat.io/rhelai3/bootc-azure-cuda-rhel9, registry.redhat.io/rhelai3/bootc-azure-rocm-rhel9 +3
  • RHSA-2026:90432 Released 2026-10-26 · Red Hat rating Important
    Red Hat Enterprise Linux AI 3.4.6 security update
    • Red Hat Enterprise Linux AI 3.4 registry.redhat.io/rhelai3/disk-image-cuda-rhel9
  • RHSA-2026:83121 Released 2026-10-14 · Red Hat rating Important
    Red Hat AI Inference 3.4.6 (rocm)
    • Red Hat AI Inference Server 3.4 registry.redhat.io/rhaii/vllm-rocm-rhel9
Show 3 more Red Hat advisories
  • RHSA-2026:83120 Released 2026-10-14 · Red Hat rating Important
    Red Hat AI Inference 3.4.6 (cuda)
    • Red Hat AI Inference Server 3.4 registry.redhat.io/rhaii/vllm-cuda-rhel9
  • RHSA-2026:83114 Released 2026-10-14 · Red Hat rating Important
    Red Hat AI Inference 3.4.6 (spyre)
    • Red Hat AI Inference Server 3.4 registry.redhat.io/rhaii/vllm-spyre-rhel9
  • RHSA-2026:83112 Released 2026-10-14 · Red Hat rating Important
    Red Hat AI Inference 3.4.6 (cpu)
    • Red Hat AI Inference Server 3.4 registry.redhat.io/rhaii/vllm-cpu-rhel9

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat AI Inference ServerAffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux AI (RHEL AI) 3AffectedNo fix yet: Fix deferred
Red Hat OpenShift AI (RHOAI)AffectedNo fix yet: Fix deferred
Red Hat AI Inference Server 3.4Fixed RHSA-2026:83112, RHSA-2026:83114, RHSA-2026:83120, RHSA-2026:83121
Red Hat Enterprise Linux AI 3.4Fixed RHSA-2026:90432, RHSA-2026:90440
Not affected: 2 products
  • Red Hat AI Inference Server
  • Red Hat OpenShift AI (RHOAI)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-55514
  2. 2026-10-03 Alias added: GHSA-33cg-gxv8-3p8g
  3. 2026-10-04 EPSS moved to the 50th–90th percentile
  4. 2026-10-16 Fix available: RHSA-2026:83112 · Red Hat
  5. 2026-10-16 Fix available: RHSA-2026:83114 · Red Hat
  6. 2026-10-16 Fix available: RHSA-2026:83120 · Red Hat
  7. 2026-10-16 Fix available: RHSA-2026:83121 · Red Hat
  8. 2026-10-16 Fix available: Red Hat AI Inference Server 3.4 · Red Hat
  9. 2026-10-30 Fix available: RHSA-2026:90432 · Red Hat
  10. 2026-10-30 Fix available: RHSA-2026:90440 · Red Hat
  11. 2026-10-30 Fix available: Red Hat Enterprise Linux AI 3.4 · Red Hat

References

Patch 2

Advisory 2

Other 3

  • TI-2024-10229 Remote Code Execution in vllm-project/vllm CVSS 3.0CRITICAL 9.8
  • TI-2024-08404 Remote Code Execution in vllm-project/vllm CVSS 3.1CRITICAL 9.8
  • TI-2026-36017 vLLM: OpenAI auth bypass CVSS 3.1CRITICAL 9.1
  • TI-2026-63056 vLLM before 0.28.0 Denial of Service via negative token ID CVSS 4.0HIGH 8.7
  • TI-2026-04308 Hardcoded trust_remote_code=True in vllm-project/vllm Bypasses User Security Control CVSS 3.0HIGH 8.8
  • TI-2026-39137 vLLM: Remote DoS in vLLM via Invalid Recovered Token Reinjection CVSS 3.1HIGH 7.5
See all 124 →

Sources

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