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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact Low

Subsequent System Availability Impact Low

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00439.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Kong Inc. Kong Gateway Enterprise unaffected
Version Status Constraints
3.10.0.0 affected < 3.10.0.20
3.13.0.0 affected < 3.13.0.12
3.14.0.0 affected < 3.14.0.17
3.15.0.0 affected < 3.15.0.7
3.16.0.0 affected < 3.16.0.2
Kong Inc. Kong AI Gateway unaffected
Version Status Constraints
2.2.0 affected < 2.2.1

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://developer.konghq.com/ai-gateway/changelog/ cve-icon cve-icon
https://developer.konghq.com/gateway/changelog/ cve-icon cve-icon
History

Thu, 12 Nov 2026 05:00:00 +0000

Type Values Removed Values Added
Title Cache Key Escaping Vulnerability in Kong Gateway Caching Plugins

Tue, 10 Nov 2026 22:00:00 +0000

Type Values Removed Values Added
Description 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.
Weaknesses CWE-116
References
Metrics cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Kong

Published:

Updated: 2026-11-10T21:45:39.935Z

Reserved: 2026-09-16T13:20:37.821Z

Link: CVE-2026-92558

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-10T22:21:15.413

Modified: 2026-11-10T22:21:15.413

Link: CVE-2026-92558

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-12T04:45:21Z

Weaknesses