CVE-2026-34955

EUVD-2026-18959 · Published Apr 4, 2026

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.

Technologies

Praison PraisonaiPraisonai Praisonai

Weaknesses

CWE-78

CVSS scores

v3.110.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

MITRE ATT&CK

Inferred

Where this vulnerability fits in an attack

ReconImpact

Initial Access

T1190Exploit Public-Facing Application

References

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-r4f2-3m54-pp7q
https://nvd.nist.gov/vuln/detail/CVE-2026-34955
https://github.com/MervinPraison/PraisonAI

Potentially impacted assets

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