Kong Event Gateway AES-GCM nonce reuse due to missing key rotation enforcement
Summary
| CVE | CVE-2026-17578 |
|---|---|
| State | PUBLISHED |
| Assigner | Kong |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-05 11:16:25 UTC |
| Updated | 2026-08-05 14:17:04 UTC |
| 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. |
Risk And Classification
Primary CVSS: v4.0 2.3 LOW from 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:X/RE:X/U:Amber
EPSS: 0.001500000 probability, percentile 0.047050000 (date 2026-08-09)
Problem Types: CWE-323 | CWE-323 CWE-323: Reusing a Nonce, Key Pair in Encryption
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb | Secondary | 2.3 | LOW | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/C... |
| 4.0 | CNA | CVSS | 2.3 | LOW | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/AU:N/... |
CVSS v4.0 Breakdown
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:X/RE:X/U:Amber
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Kong | Kong Event Gateway | affected 1.0.0 1.1.2 semver | Not specified |
| CNA | Kong | Kong Event Gateway | affected 1.2.0 1.2.1 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| developer.konghq.com/event-gateway/changelog | 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb | developer.konghq.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Additional Advisory Data
Solutions
CNA: Upgrade Kong Event Gateway to version 1.1.2 (for the 1.1.x branch or 1.0.x which is no longer supported) or 1.2.1 (for the 1.2.x branch). These versions enforce automatic key rotation before the NIST-recommended usage limit is reached.