Chainstack reports customer account database access; rotate passwords and node credentials
Chainstack confirms an intruder accessed its customer account database and systems holding node credentials. Names, member emails and password hashes may be exposed. Node credential reads are unproven, but the vendor requests rotation and platform API key regeneration.
- Disclosed
- Nov 3, 2026
- Public disclosure date
- Severity
- Septic Tank Blew
- No CVE: a breach, not a bug
- Splash zone
- Chainstack customer accounts and node credentials held in the accessed systems; affected customer count is undisclosed.
- Chainstack · Data breach · Credentials
- In the wild
- Yes
- Chainstack confirms unauthorized access to development and production infrastructure.
What happened
Chainstack’s November 3 report says an attacker entered through an unnamed third-party component and accessed a customer account database. Organization names, account holder names, organization-member emails and password hashes may have been exposed. The company also treats node credentials as exposed because their hosting systems were accessible, although it found no evidence the credentials were read. Notifying all customers does not establish that every customer’s records were copied. No victim count or confirmed wallet loss is provided.
The vendor says customer nodes, the console and the API were not modified, and customer-facing services kept operating. It says full payment card numbers and security codes were not exposed because it does not store them. These are vendor findings, not an independent forensic verification. The report links the incident to a broader AI-powered campaign but does not name the component, actor or an exploit identifier; a connection to another named incident is unverified.
L4 reflects a confirmed intrusion into production infrastructure and access to customer account data, not a proven mass-victim count. There is no customer software patch. Passwords, node credentials and platform API keys are separate remediation tasks. Generating new node credentials alone leaves the old ones active until rotation is completed.
Crime-scene timeline
Oct 26, 2026
Attacker enters development environment
Vendor investigation dates the first access to this day.
Oct 29, 2026
Attacker reaches parts of production
Chainstack does not identify the third-party component used for entry.
Oct 31, 2026
Chainstack detects the intrusion and cuts access
Customer-facing services continued operating, according to the vendor.
Nov 2, 2026
Vendor finalizes investigation and closes incident
Closure does not complete customer-side credential rotation.
Nov 3, 2026
Public report asks customers to replace credentials
Account database access is confirmed; node credential reads are not established.
Who said what
We list each claim and who made it. Primary sources (the vendor, the researcher, the registry) are marked. Where reports disagree, we grade by the worst credible case.
- Chainstack incident reportPrimaryCreated and updated November 3; intrusion dates, possible exposed categories, service integrity claims and customer actions.
- Chainstack node credential rotation guidePrimaryGenerate, migrate and deactivate; role requirements, multiple sets and multichain-token limitation.
- Chainstack account management guidePrimaryPassword-change location, official recovery and SSO administrator responsibilities.