CVE-2026-17578 Kong Event Gateway AES-GCM nonce reuse due to missing key rotation enforcement
An authorized consumer can recover plaintext from messages if AES-GCM nonce collisions occur due to missing key rotation in Kong Event Gateway.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-17578?
CVE-2026-17578 is a low-severity vulnerability in Kong Event Gateway, published on 5 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-323
Which versions are affected by CVE-2026-17578?
How do I fix CVE-2026-17578?
No fix has been published for CVE-2026-17578 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-17578 being exploited?
There is no known exploitation of CVE-2026-17578 in the wild and no public exploit code.
Sources
Also known as GHSA-v6xc-r9wm-438j.