SEPTEMBER 20, 2026
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Case File

CVE-2026-47211

HIGH · CVSS 8.4 EPSS 0.17% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-03 · Last synced 2026-09-02

CyberRota Analysis

AI-Generated

Ouroboros versions prior to 0.39.0 are vulnerable to arbitrary code execution when users clone malicious repositories and execute commands within those directories, due to the software loading environment variables from a potentially compromised .env file. This flaw allows attackers to execute malicious scripts by manipulating CLI path variables, posing a risk of system takeover. Developers and organizations utilizing Ouroboros for AI coding should prioritize upgrading to version 0.39.0 to mitigate this vulnerability.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
arbitrary code execution code execution

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-47211
Severity
HIGH
CVSS
8.4
EPSS
0.17%

Original NVD Description

Ouroboros is a local-first runtime for AI coding agents that records their actions and applies user-defined policies to constrain behavior. In versions prior to 0.39.0, if a user clones a malicious repository and runs Ouroboros commands within that directory, it can lead to arbitrary code execution and potential system takeover. The vulnerability stems from Ouroboros loading the .env file from the current working directory. Execution-affecting environment variables such as OUROBOROS_CLI_PATH, OPENCODE_CLI_PATH, and other backend selectors are accepted directly from this local .env. An attacker can include a malicious script in the repository and point the CLI path variable to it (e.g., OUROBOROS_CLI_PATH=./malicious_script.sh). When the user executes a command like ouroboros init or any command that instantiates the adapter, the malicious script is executed instead of the intended CLI. This issue has been fixed in version 0.39.0.