Advisory record · GHSA-9gm9-c8mq-vq7m

PraisonAI: OS Command Injection in MCPHandler.parse_mcp_command()

CVSS 9.8 CriticalCriticalEPSS 0.0084 · 58th percentile

Critical, because:

  • CVSS score 9.8: 9.0 or more.

How we decide what’s critical

Published by the GitHub Advisory Database at 29 Jun 2026, 11:50 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
praisonaiPyPI>=4.5.15, <4.5.694.5.69
Identifiers
GHSA-9gm9-c8mq-vq7m · CVE-2026-34935 · PYSEC-2026-471
Weakness (CWE)
CWE-78
Published
29 Jun 2026
Updated
13 Jul 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The praisonai PyPI package, versions from 4.5.15 before 4.5.69, passes the --mcp command-line argument to shell-style splitting and then to process creation without validation, so it can execute arbitrary OS commands. An attacker who can influence the --mcp argument, with no authentication needed, can run commands as the user running the process. Upgrade to praisonai 4.5.69 or later, which adds a command allowlist; until then, do not pass untrusted input to --mcp.

Written 6 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.8 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0084, the 58th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 15:04 UTC First seen by agentprime
  2. 31 Oct 2026, 15:04 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.