CVE-2026-14916
CVE-2026-14916 is a high-severity vulnerability with a CVSS 4.0 base score of 7.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-241.
Key facts
- Severity: High (CVSS 4.0 base score 7.7)
- EPSS exploit prediction: 1% (50th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-241
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2026-14916?
- 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.
- How severe is CVE-2026-14916?
- CVE-2026-14916 has a CVSS 4.0 base score of 7.7, rated high severity.
- Is CVE-2026-14916 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-14916?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2026-14916 published?
- CVE-2026-14916 was published on 2026-09-16 and last updated on 2026-09-18.
References
Other CWE-241 vulnerabilities
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- CVE-2025-2268 — High (CVSS 7.5): The HP LaserJet MFP M232-M237 Printer Series may be vulnerable to a denial of service attack when a specially crafted…
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