Advisory record · GHSA-6757-hggm-hp2w

vLLM: Public multimodal SHM handle forgery reaches worker-side `pickle.loads()` with insecure serialization disabled

CVSS 7.5 HighEPSS 0.0051 · 43rd percentile

Published by the GitHub Advisory Database at 28 Oct 2026, 21:15 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
vllmPyPI<0.32.00.32.0
Identifiers
GHSA-6757-hggm-hp2w · CVE-2026-115912 · PYSEC-2026-4345
Weakness (CWE)
CWE-502
Published
28 Oct 2026
Updated
29 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The vLLM package, versions before 0.32.0, is vulnerable when shared-memory multimodal caching (--mm-processor-cache-type shm) is enabled. An authenticated caller can forge shared-memory handles through public HTTP routes, leading the worker process to call pickle.loads() on attacker-staged bytes, which allows arbitrary Python execution in the worker. Upgrade to vLLM 0.32.0 or later, which contains the fix.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.5 High 3.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0051, the 43rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:07 UTC First seen by agentprime
  2. 31 Oct 2026, 14:07 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.