What’s Vulnerable › Vulnerabilities
CVE-2026-34955: PraisonAI: Sandbox Escape via shell=True and Bypassable Blocklist in SubprocessSandbox
- Severity: critical (CVSS 10.0 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2026-04-04 · updated 2026-07-24
- Weakness: CWE-78
Description
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 products
- MervinPraison PraisonAI: before 4.5.97 — fixed in 4.5.97
How to fix
Upgrade to a fixed version: MervinPraison PraisonAI 4.5.97. Check the vendor advisory for mitigations.
References
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