CVE-2026-14916 Kong API Gateway Enterprise: JWT Algorithm-Confusion
Unauthenticated attackers can bypass authentication in Kong Enterprise Gateway by exploiting JWT algorithm confusion, leading to potential data compromise.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-14916?
CVE-2026-14916 is a high-severity authentication bypass vulnerability in Kong Enteprise Gateway, published on 16 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A JWT signature verification vulnerability affects Kong components that perform JWT validation for MCP OAuth2 or DataKit integrations inside Kong API Gateway Enterprise. The affected code does not properly validate that the JWT signing algorithm is compatible with the type of key used for verification.
As a result, an unauthenticated remote attacker may be able to craft a forged JWT that is incorrectly accepted as valid, leading to authentication bypass and potential compromise of confidentiality, integrity, and availability.
Weakness: CWE-241
Which versions are affected by CVE-2026-14916?
How do I fix CVE-2026-14916?
No fix has been published for CVE-2026-14916 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-14916 being exploited?
There is no known exploitation of CVE-2026-14916 in the wild and no public exploit code.
Sources
Also known as GHSA-5qvf-77w7-x85r.