Read the docs
TI-2026-34745 Aliases CVE-2026-47155GHSA-3ww4-5jv9-j5gm

vLLM: Artifact Pin Decay in vLLM allows pinned deployments to load unpinned code, weights, and processors

Priority LOW 28CWE-345Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-345.

Summary

vLLM is an inference and serving engine for large language models (LLMs). Prior to 0.22.0, vLLM's revision pinning controls do not consistently apply to all artifacts loaded for a model. A deployment that supplies --revision or --code-revision can still load dynamic code, GGUF files, image processors, retrieval side weights, or same-repository subfolder weights/config from an unpinned/default revision. This is a supply-chain integrity issue for pinned vLLM deployments. Operators can believe they are serving a reviewed model revision while vLLM resolves behavior-affecting nested or sibling artifacts outside that reviewed revision. This vulnerability is fixed in 0.22.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00249 16th percentileScored 2026-11-07
Fix Partial vllm (vllm-project): 0.22.0vllm (PyPI): 0.22.0Red Hat: 5 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-projectvllmbefore 0.22.00.22.0Patch availableCNA
—vllm (PyPI)before 0.22.00.22.0Patch availableGHSA-3ww4-5jv9-j5gm
  • vllm Vendorvllm-project Affected before 0.22.0 Fixed in 0.22.0 Patch available CNA
  • vllm (PyPI) Vendor— Affected before 0.22.0 Fixed in 0.22.0 Patch available GHSA-3ww4-5jv9-j5gm

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*before 0.22.0VulnerablevLLM
  • cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:* Versions before 0.22.0 Vulnerable ·vLLM

Remediation

  • Fix · CNA vllm (vllm-project) Fixed in 0.22.0
  • Fix · GHSA-3ww4-5jv9-j5gm vllm (PyPI) Fixed in 0.22.0 Advisory →

Red Hat 5 advisories

  • RHSA-2026:62336 Released 2026-09-01 · Red Hat rating Important
    Red Hat Enterprise Linux AI 3.3.6 enhancement update
    • Red Hat Enterprise Linux AI 3.3 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-2026:62335 Released 2026-09-01 · Red Hat rating Important
    Red Hat Enterprise Linux AI 3.3.6 enhancement update
    • Red Hat Enterprise Linux AI 3.3 registry.redhat.io/rhelai3/disk-image-cuda-rhel9
  • RHSA-2026:60363 Released 2026-08-26 · Red Hat rating Important
    Red Hat AI Inference Server 3.3.6 (Spyre)
    • Red Hat AI Inference Server 3.3 registry.redhat.io/rhaiis/vllm-spyre-rhel9
Show 2 more Red Hat advisories
  • RHSA-2026:59139 Released 2026-08-24 · Red Hat rating Important
    Red Hat AI Inference Server 3.3.6 (ROCm)
    • Red Hat AI Inference Server 3.3 registry.redhat.io/rhaiis/vllm-rocm-rhel9
  • RHSA-2026:59138 Released 2026-08-24 · Red Hat rating Important
    Red Hat AI Inference Server 3.3.6 (CUDA)
    • Red Hat AI Inference Server 3.3 registry.redhat.io/rhaiis/vllm-cuda-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 3.3Fixed RHSA-2026:59138, RHSA-2026:59139, RHSA-2026:60363
Red Hat Enterprise Linux AI 3.3Fixed RHSA-2026:62335, RHSA-2026:62336
Not affected: 1 product
  • Red Hat OpenShift AI (RHOAI)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-47155
  2. 2026-10-03 Alias added: GHSA-3ww4-5jv9-j5gm

References

Patch 1

Advisory 3

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

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences