Vulnerability · Published Oct 26, 2026 · Assigned by VulnCheck

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

High 8.1

In plain English

A high-severity security flaw in kener from rajnandan1. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities).

Severity (CVSS 3.1)8.1High

Exploit odds (30 days)0.6%top 49.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
rajnandan1	kener	3.0.0 – before 4.1.10

Weakness: CWE-321 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

GitHub Issue #871 issue-tracking
https://github.com/rajnandan1/kener product
https://github.com/rajnandan1/kener/commit/ff636483544c926eab5b5e3e26b811c0f52bcaf8 patch
kener v4.1.10 Release Notes release-notes
https://github.com/rajnandan1/kener/blob/v4.1.9/src/lib/server/controllers/commonController.ts#L44-L55 technical-description
VulnCheck Advisory: Kener 3.0.0 before 4.1.10 Authentication Bypass via Hardcoded Fallback JWT Secret third-party-advisory