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

CVE-2026-34955

PraisonAI: Sandbox Escape via shell=True and Bypassable Blocklist in SubprocessSandbox PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
MervinPraison / PraisonAI	affected < 4.5.97

CWE

CWE-78

References

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-r4f2-3m54-pp7q

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.