---
id: "CVE-2026-114054"
kind: "vulnerability"
aliases: ["CVE-2026-114054"]
title: "vLLM: cache key collisions let authenticated users read other requests' media"
severity: "high"
cvss: 7.1
epss: 0.00275
exploited: false
status: "open"
category: "ai-tooling"
products: []
ecosystems: []
tags: ["ai-tooling", "llm-inference", "multi-tenant", "self-hosted", "vllm"]
not_affected_if: ["no-untrusted-callers", "single-tenant"]
published_at: "2026-10-21T01:17:28+00:00"
first_seen_at: "2026-10-23T21:57:27+00:00"
updated_at: "2026-10-25T03:32:05+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-114054", "first_seen_at": "2026-10-23T21:57:27+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-114054", "first_seen_at": "2026-10-24T13:15:55+00:00"}]
---

# vLLM: cache key collisions let authenticated users read other requests' media

vLLM before 0.31.0 builds shared cache keys from caller-controlled values such as an EXIF ImageID or cache_salt. An authenticated attacker can craft a value that matches another request's cache entry and receive that request's processed media or reuse its first-block KV state.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed version with `pip show vllm` or `python -c "import vllm; print(vllm.__version__)"`, and flag anything below `0.31.0`.
- Check whether the API server accepts `cache_salt` or multimodal image inputs from untrusted callers.

## Fix

- Upgrade vLLM to `0.31.0` or later.
- Until upgraded, restrict API access to trusted callers and do not expose `cache_salt` or EXIF-based image input to other tenants.

## Timeline

- 2026-10-23T21:57:27+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-114054
- 2026-10-24T13:15:55+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-114054

## From the sources

vLLM before 0.31.0 contains a cache aliasing vulnerability that allows authenticated attackers to collide shared cache keys by supplying caller-controlled values such as EXIF ImageID or cache_salt. Attackers can set a UUID EXIF ImageID to receive another request's cached processed media, or match cache_salt to a LoRA name to reuse first-block KV state.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_