CVE-2026-3194 Details
Description
A flaw has been found in Chia Blockchain 2.1.0. The affected element is the function send_transaction/get_private_key of the component RPC Server Master Passphrase Handler. This manipulation causes missing authentication. The attack can only be executed locally. The attack's complexity is rated as high. The exploitability is described as difficult. The exploit has been published and may be used. The vendor was informed early via email. A separate report via bugbounty was rejected with the reason "This is by design. The user is responsible for host security".
An authentication bypass vulnerability has been identified in the Chia Blockchain RPC server version 2.1.0. The issue arises in the Master Passphrase Handler, specifically within the 'send_transaction' and 'get_private_key' functions. This vulnerability allows local processes to bypass authentication and access sensitive operations, such as transferring funds and extracting private keys, including the 24-word seed, without requiring the Master Passphrase. The vulnerability is exacerbated by Cross-Site Request Forgery (CSRF) risks, as the RPC server lacks proper origin validation and CORS headers, enabling remote attacks that can manipulate wallet transactions.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Feb 25, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/Danimlzg/chia-rpc-auth-bypass.git | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/?ctiid.347750 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.347750 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.757201 | [email protected] | Third Party AdvisoryVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-306 | Missing Authentication for Critical Function | [email protected] |
| CWE-287 | Improper Authentication | [email protected] |
| CWE-306 | Missing Authentication for Critical Function | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| chia blockchain | 2.1.0 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 29, 2026 | Data Remediation | [email protected] |
| Mar 5, 2026 | Initial Analysis | [email protected] |
| Feb 25, 2026 | New CVE Received | [email protected] |