# CVE-2026-92558: Kong Gateway Enterprise cache key injection via separator characters

Source: https://junglewise.ai/threats/cve-2026-92558-the-proxy-cache-and-proxy-cache-advanced-plugins-in-kong-gateway  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-92558 · Severity: info · Published 2026-11-10

Kong Gateway Enterprise and Kong AI Gateway's proxy-cache and proxy-cache-advanced plugins fail to properly escape separator characters when generating cache keys, allowing an attacker to manipulate which cached responses are served. An attacker can craft requests that cause a response cached for one legitimate request to be served to a different request, potentially exposing sensitive data or bypassing security controls.

Technologies: [Kong AI Gateway](https://junglewise.ai/threats/technologies/kong-ai-gateway), [Kong Gateway Enterprise](https://junglewise.ai/threats/technologies/gateway-enterprise). Vendors: [Kong](https://junglewise.ai/threats/vendors/kong).

## Quick answers

**Is CVE-2026-92558 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-92558 being exploited in the wild.

**How severe is CVE-2026-92558?** Informational severity, published 10 November 2026.

**Which products and versions are affected?** Kong Kong Gateway Enterprise; Kong Kong AI Gateway.

**Is there a fix for CVE-2026-92558?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-92558 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-92558?** Check whether you run Kong AI Gateway or Kong Gateway Enterprise. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The proxy-cache and proxy-cache-advanced plugins in Kong Gateway build cache keys by concatenating request parameters without properly escaping separator characters. This allows cache key collisions where different requests generate the same or overlapping cache keys. An unauthenticated remote attacker can send crafted requests to trigger unintended cache hits, causing responses intended for one request to be served to another on the same Route.

## Affected products

- Kong Kong Gateway Enterprise
- Kong Kong AI Gateway

## Timeline

- 2026-11-10: disclosed

## References

- [https://developer.konghq.com/ai-gateway/changelog/](https://developer.konghq.com/ai-gateway/changelog/)
- [https://developer.konghq.com/gateway/changelog/](https://developer.konghq.com/gateway/changelog/)

## Related threats

- [Kong Gateway Enterprise cache key omission vulnerability](https://junglewise.ai/threats/cve-2026-92545-the-proxy-cache-and-proxy-cache-advanced-plugins-in-kong-gateway)
- [Kong Gateway Enterprise cache poisoning via Authorization header](https://junglewise.ai/threats/cve-2026-92443-the-caching-plugins-in-kong-gateway-enterprise-and-kong-ai)
- [Kong Gateway Enterprise and Kong AI Gateway HTTP header injection via X-Forwarded-Prefix](https://junglewise.ai/threats/cve-2026-92441-kong-gateway-enterprise-and-kong-ai-gateway-include-decoded-cr-lf)
- [Kong Gateway request-callout plugin cache bypass](https://junglewise.ai/threats/cve-2026-123041-the-request-callout-plugin-in-kong-gateway-enterprise-and-kong)
- [Kong Gateway SQL injection in LLM usage counters](https://junglewise.ai/threats/cve-2026-92544-sql-injection-in-the-llm-usage-counters-of-kong-gateway)