CRITICAL GitHub
CVE-2026-11746
Central Dogma: Hard-coded ZooKeeper replication secret 'ch4n63m3' with silent fallback enables cluster takeover
## Vulnerability
`ZooKeeperReplicationConfig.secret()` silently substitutes the hard-coded constant `"ch4n63m3"` (leetspeak for "change me") whenever the operator omits `replication.secret`. The same secret is wired into both the **client-facing SASL context** and the **quorum/learner SASL contexts** of the embedded ZooKeeper. The constant is in OSS source on GitHub and is discoverable via code search in seconds.
### Three Reinforcing Defects
1. **OSS-public credential** — `DEFAULT_SECRET` is
Affected Products
- maven/com.linecorp.centraldogma:centraldogma-server < 0.84.0
References
- https://github.com/advisories/GHSA-2j95-gqxf-v3vg
- https://github.com/line/centraldogma/security/advisories/GHSA-2j95-gqxf-v3vg
- https://nvd.nist.gov/vuln/detail/CVE-2026-11746
- https://github.com/advisories/GHSA-2j95-gqxf-v3vg
This critical severity vulnerability was published on 2026-09-11 via GitHub. Affected: maven/com.linecorp.centraldogma:centraldogma-server < 0.84.0.
vulnfeed aggregates 13138 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.