CVE-2026-3194: Chia Blockchain · Missing Authentication
Affects Chia BlockchainSource CVE Database V5
Public exploit available · CVSS 2.0 Low.
Data as of 29 Oct 2026, 19:04 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 18% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:PExploitation evidence
Disclosed: evidence found.
CVE published 25 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CVSS exploit maturity: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| ChiaBlockchain | Affected
| Fixed in– |
GitHubdanimlzg/chia-rpc-auth-bypasspkg:github/danimlzg/chia-rpc-auth-bypassOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
To mitigate this vulnerability, organizations should implement strict host security controls, including limiting local user access to trusted personnel only. Employing strong operating system-level authentication, role-based access controls, and monitoring for unauthorized local access attempts is critical. Running the Chia Blockchain node within isolated environments such as containers or virtual machines with restricted user permissions can reduce exposure. Additionally, disabling or restricting RPC server access on hosts where it is not needed can minimize risk. Regularly auditing user accounts and processes on the host system will help detect potential misuse. Since the vendor has not provided a patch, users should consider upgrading to later versions if available or applying custom authentication wrappers around the RPC interface. Finally, educating users about the importance of host security in blockchain environments is essential to prevent exploitation.
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".