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TI-2026-26997 Aliases CVE-2026-34753GHSA-pf3h-qjgv-vcpr

vLLM affected by Server-Side Request Forgery (SSRF) in `download_bytes_from_url `

Priority LOW 24CWE-918Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.

Summary

vLLM is an inference and serving engine for large language models (LLMs). From 0.16.0 to before 0.19.0, a server-side request forgery (SSRF) vulnerability in download_bytes_from_url allows any actor who can control batch input JSON to make the vLLM batch runner issue arbitrary HTTP/HTTPS requests from the server, without any URL validation or domain restrictions. This can be used to target internal services (e.g. cloud metadata endpoints or internal HTTP APIs) reachable from the vLLM host. This vulnerability is fixed in 0.19.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00255 17th percentileScored 2026-11-07
Fix Partial vllm (vllm-project): 0.19.0vllm (PyPI): 0.19.0Red Hat: 6 advisoriesRed Hat: 2 fixed, 2 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-projectvllm0.16.0 to before 0.19.00.19.0Patch availableCNA
—vllm (PyPI)0.16.0 to before 0.19.00.19.0Patch availableGHSA-pf3h-qjgv-vcpr
  • vllm Vendorvllm-project Affected 0.16.0 to before 0.19.0 Fixed in 0.19.0 Patch available CNA
  • vllm (PyPI) Vendor— Affected 0.16.0 to before 0.19.0 Fixed in 0.19.0 Patch available GHSA-pf3h-qjgv-vcpr

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*0.16.0 to before 0.19.0VulnerablevLLM
  • cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:* Versions 0.16.0 to before 0.19.0 Vulnerable ·vLLM

Remediation

  • Fix · CNA vllm (vllm-project) Fixed in 0.19.0
  • Fix · GHSA-pf3h-qjgv-vcpr vllm (PyPI) Fixed in 0.19.0 Advisory →

Red Hat 6 advisories

  • RHSA-2026:59151 Released 2026-08-24 · Red Hat rating Important
    Red Hat Enterprise Linux AI 3.4.4 enhancement 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-2026:59144 Released 2026-08-24 · Red Hat rating Important
    Red Hat Enterprise Linux AI 3.4.4 enhancement update
    • Red Hat Enterprise Linux AI 3.4 registry.redhat.io/rhelai3/disk-image-cuda-rhel9
  • RHSA-2026:57390 Released 2026-08-20 · Red Hat rating Important
    Red Hat AI Inference 3.4.4 (rocm)
    • Red Hat AI Inference Server 3.4 registry.redhat.io/rhaii/vllm-rocm-rhel9
Show 3 more Red Hat advisories
  • RHSA-2026:57389 Released 2026-08-20 · Red Hat rating Important
    Red Hat AI Inference 3.4.4 (cuda)
    • Red Hat AI Inference Server 3.4 registry.redhat.io/rhaii/vllm-cuda-rhel9
  • RHSA-2026:57387 Released 2026-08-20 · Red Hat rating Important
    Red Hat AI Inference 3.4.4 (spyre)
    • Red Hat AI Inference Server 3.4 registry.redhat.io/rhaii/vllm-spyre-rhel9
  • RHSA-2026:57380 Released 2026-08-20 · Red Hat rating Important
    Red Hat AI Inference 3.4.4 (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 OpenShift AI (RHOAI)AffectedNo fix yet: Fix deferred
Red Hat AI Inference Server 3.4Fixed RHSA-2026:57380, RHSA-2026:57387, RHSA-2026:57389, RHSA-2026:57390
Red Hat Enterprise Linux AI 3.4Fixed RHSA-2026:59144, RHSA-2026:59151

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-34753
  2. 2026-10-03 Alias added: GHSA-pf3h-qjgv-vcpr

References

Patch 1

Advisory 2

Other 5

  • 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