CVE-2026-34955 HIGH

CVE-2026-34955: PraisonAI: Sandbox Escape via shell=True and Bypassable Blocklist in SubprocessSandbox

Vendor Mervinpraison
Product PraisonAI
Weakness CWE-78
Published April 3, 2026
Last update April 6, 2026
View on NVD All CVEs

CVSS base score

8.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

PraisonAI is a multi-agent teams system. Prior to version 4.5.97, SubprocessSandbox in all modes (BASIC, STRICT, NETWORK_ISOLATED) calls subprocess.run() with shell=True and relies solely on string-pattern matching to block dangerous commands. The blocklist does not include sh or bash as standalone executables, allowing trivial sandbox escape in STRICT mode via sh -c '<command>'. This issue has been patched in version 4.5.97.

Key dates

02Disclosure timeline

April 3, 2026 CVE published
April 6, 2026 Record updated