---
title: "CVE-2026-11746: Central Dogma: Hard-coded ZooKeeper replication secret 'ch4n63m3' with silent fallback enables cluster takeover"
url: https://erroneo.us/security/cve/CVE-2026-11746/
description: "CVE-2026-11746 (com.linecorp.centraldogma:centraldogma-server (Maven)): A vulnerability has been identified in centraldogma-server versions prior to 0.84.0…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-06-22
date_modified: 2026-09-11
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-11746"
kev: false
cvss: 9.4
epss: 0.00229
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-11746: Central Dogma: Hard-coded ZooKeeper replication secret 'ch4n63m3' with silent fallback enables cluster takeover

**Signal:** Critical, preconditions apply. Severe if exploited, but exploitation needs conditions that may not apply to you. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.2% , percentile 13: FIRST’s model estimates a 0.2% chance of exploitation activity in the next 30 days, higher than 13% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Only applies if your dependency tree includes com.linecorp.centraldogma:centraldogma-server (Maven) < 0.84.0, fixed in 0.84.0 . Check your lockfile, including transitive dependencies.

## What it is

A vulnerability has been identified in centraldogma-server versions prior to 0.84.0, where enabling ZooKeeper replication without setting replication.secret causes the server to silently fall back to a hard-coded, publicly known secret. This default credential authenticates the embedded ZooKeeper ensemble, allowing an attacker with network access to read the full replication log or join the quorum and execute arbitrary replicated commands across the cluster.

## Affected packages

- Maven `com.linecorp.centraldogma:centraldogma-server` < 0.84.0 → fixed: 0.84.0

## Affected products (CVE record)

- LY Corporation Central Dogma: see advisory

## Severity

- LY-Corporation CVSS 4.0: 9.4 `CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`
- GitHub CVSS 4.0: 9.4 `CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.23% probability of exploitation activity in the next 30 days; percentile 13.

## Sources

- [GitHub Advisory GHSA-2j95-gqxf-v3vg](https://github.com/advisories/GHSA-2j95-gqxf-v3vg)
- [CVE.org record CVE-2026-11746](https://www.cve.org/CVERecord?id=CVE-2026-11746)
- [NVD entry CVE-2026-11746](https://nvd.nist.gov/vuln/detail/CVE-2026-11746)
- [github.com](https://github.com/line/centraldogma/security/advisories/GHSA-2j95-gqxf-v3vg)

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Source page: https://erroneo.us/security/cve/CVE-2026-11746/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt