---
id: "CVE-2026-92558"
page: "https://infrastack.ai/live/CVE-2026-92558"
kind: "vulnerability"
aliases: ["CVE-2026-92558"]
title: "Kong Gateway: proxy cache can serve one user's response to another"
severity: "medium"
cvss: 6.3
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["api-gateway", "kong", "kong-gateway", "proxy-cache", "vendor"]
not_affected_if: ["proxy-cache-not-enabled"]
published_at: "2026-11-10T22:21:15+00:00"
first_seen_at: "2026-11-10T22:27:31+00:00"
updated_at: "2026-11-10T22:29:16+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-92558", "first_seen_at": "2026-11-10T22:27:31+00:00"}]
exploit_sources: []
---

# Kong Gateway: proxy cache can serve one user's response to another

Link for people: https://infrastack.ai/live/CVE-2026-92558 (this .md is for agents)

The proxy-cache and proxy-cache-advanced plugins in Kong Gateway Enterprise and Kong AI Gateway build cache keys without escaping separator characters. A remote attacker can make a response cached for one request get served for a different request on the same Route.

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

## How to check

- Check whether the `proxy-cache` or `proxy-cache-advanced` plugin is enabled on any Route or Service in Kong Gateway Enterprise or Kong AI Gateway.

## Timeline

- 2026-11-10T22:27:31+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-92558

## From the sources

The proxy-cache and proxy-cache-advanced plugins in Kong Gateway Enterprise and Kong AI Gateway do not escape separator characters when building the cache key, allowing a remote attacker to cause a response cached for one request to be served for a different request on the same Route.

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_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_