CVE-2026-14916Kong API Gateway Enterprise: JWT Algorithm-Confusion
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It affects Kong Enteprise Gateway. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.7 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
- Weakness (CWE)
- CWE-241
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Kong
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Kong Kong Enteprise Gateway kong:enteprise_gateway (from the name) | from 3.15.0.0 before 3.15.0.3; from 3.14.0.0 before 3.14.0.12; from 3.13.0.0 before 3.13.0.9; from 3.12.0.0 before 3.12.0.10; from 3.10.0.0 before 3.10.0.17; from 3.4.0.0 before 3.4.3.29 | CNA record |
References
- https://developer.konghq.com/gateway/changelog/release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.