PT-2026-45033 · Ouroboros · Ouroboros

CVE-2026-47211 · Published 2026-05-29 · Updated 2026-08-03

Positive Technologies (AI Summary)

CVSS v4.0

8.6

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions Ouroboros versions prior to 0.39.0

Description A Remote Code Execution issue exists when the software loads a .env file from the current working directory. An attacker can include a malicious script in a repository and use environment variables such as OUROBOROS CLI PATH or OPENCODE CLI PATH to point to that script. When a user runs commands like ouroboros init or any command that instantiates the adapter within that directory, the malicious script is executed instead of the intended CLI, potentially leading to a full system takeover.

Recommendations Update to version 0.39.0 or later. As a temporary workaround, manually inspect the .env file in cloned repositories for unexpected OUROBOROS * CLI PATH or OPENCODE CLI PATH overrides before running commands.

Fix

Untrusted Search Path

Weakness Enumeration

CWE-426

Related Identifiers

CVE-2026-47211

GHSA-C4M7-2GWP-VW76

PYSEC-2026-2857

Affected Products

Ouroboros

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2026-47211 · Security Note
• https://osv.dev/vulnerability/GHSA-c4m7-2gwp-vw76 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2026-2857 · Vendor Advisory
• https://github.com/Q00/ouroboros · Note
• https://github.com/Q00/ouroboros/commit/4e70b760b4eb157469b58645339ba831f6513d37 · Note
• https://github.com/Q00/ouroboros/pull/1078 · Note
• https://github.com/Q00/ouroboros/security/advisories/GHSA-c4m7-2gwp-vw76 · Note
• https://pypi.org/project/ouroboros-ai · Note
• https://github.com/advisories/GHSA-c4m7-2gwp-vw76 · Note