CVE-2026-123041

HIGHCVSS 8.2/10EPSS 0.45%

Last modified

CVE-2026-123041 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. 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.. EPSS estimates a 0.45% chance of exploitation in the next 30 days.

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.

Metrics

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
Kong Inc.Kong Gateway Enterprise>= 3.10.0.0, < 3.10.0.20; >= 3.13.0.0, < 3.13.0.12; >= 3.14.0.0, < 3.14.0.17; >= 3.15.0.0, < 3.15.0.7; >= 3.16.0.0, < 3.16.0.2
Kong Inc.Kong AI Gateway>= 2.2.0, < 2.2.1

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-123041?
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.
How severe is CVE-2026-123041?
CVE-2026-123041 has a CVSS score of 8.2/10 (HIGH severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.
How do I fix CVE-2026-123041?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST