What’s Vulnerable › Vulnerabilities
CVE-2026-17578: Kong Event Gateway AES-GCM nonce reuse due to missing key rotation enforcement
- Severity: low (CVSS 2.3 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-05 · updated 2026-10-23
- Weakness: CWE-323
Description
Kong Event Gateway versions 1.0.0 through 1.1.1 and 1.2.0 do not enforce key rotation before reaching NIST SP 800-38D recommended usage limit for AES-GCM encryption keys with random nonces when the AWS IAM encryption feature is enabled. If a producer sends messages at a sustained high rate without key rotation, which only occurs on reboot of the Kong Event Gateway instance, the probability of a nonce collision becomes non-negligible. An authorized consumer who detects a nonce collision can recover parts of plaintext from the affected messages. New versions 1.1.2 and 1.2.1 enforce automatic key rotation before the recommended usage limit is reached.
Affected products
- Kong Event Gateway: from 1.0.0 before 1.1.2; from 1.2.0 before 1.2.1 — fixed in 1.1.2, 1.2.1
How to fix
Upgrade to a fixed version: Kong Event Gateway 1.1.2, 1.2.1. Check the vendor advisory for mitigations.
References
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