What’s Vulnerable › Vulnerabilities

CVE-2026-116747: Kener 3.0.0 before 4.1.10 Authentication Bypass via Hardcoded Fallback JWT Secret

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-26 · updated 2026-10-27
• Weakness: CWE-321

Description

Kener 3.0.0 before 4.1.10 contains an authentication bypass vulnerability that allows unauthenticated attackers to forge session tokens by using the hardcoded DUMMY_SECRET fallback key. When KENER_SECRET_KEY is empty or unset, attackers knowing an administrator email can sign a kener-user cookie to access /manage/api with full administrative privileges or forge password-reset tokens.

Affected products

• rajnandan1 kener: from 3.0.0 before 4.1.10 — fixed in 4.1.10

How to fix

Upgrade to a fixed version: rajnandan1 kener 4.1.10. Check the vendor advisory for mitigations.

References

• https://github.com/rajnandan1/kener
• https://github.com/rajnandan1/kener/blob/v4.1.9/src/lib/server/controllers/commonController.ts#L44-L55
• https://github.com/rajnandan1/kener/commit/ff636483544c926eab5b5e3e26b811c0f52bcaf8
• https://github.com/rajnandan1/kener/issues/871
• https://github.com/rajnandan1/kener/releases/tag/v4.1.10
• https://www.vulncheck.com/advisories/kener-3.0.0-before-4.1.10-authentication-bypass-via-hardcoded-fallback-jwt-secret

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