The request-callout plugin in Kong Gateway Enterprise and Kong AI Gateway omits callout headers not sent by the client from its cache key, allowing a cached callout response for a caller to be served to another.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00445.

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

No data.

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Project Subscriptions

No data.

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

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

Type Values Removed Values Added
Description The request-callout plugin in Kong Gateway Enterprise and Kong AI Gateway omits callout headers not sent by the client from its cache key, allowing a cached callout response for a caller to be served to another.
Weaknesses CWE-524
References
Metrics cvssV4_0

{'score': 8.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Kong

Published:

Updated: 2026-11-10T21:43:16.091Z

Reserved: 2026-11-05T08:13:50.698Z

Link: CVE-2026-123041

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-10T22:18:28.870

Modified: 2026-11-10T22:18:28.870

Link: CVE-2026-123041

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses