Critical 9.7Published Apr 9, 2026

CVE-2026-40088Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in praisonai

Updated under an hour ago (Oct 27, 2026, 8:25 PM ET)

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It affects MervinPraison PraisonAI and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for MervinPraison PraisonAI

Exploited in the last 30 days

PraisonAI is a multi-agent teams system. Prior to 4.5.121, the execute_command function and workflow shell execution are exposed to user-controlled input via agent workflows, YAML definitions, and LLM-generated tool calls, allowing attackers to inject arbitrary shell commands through shell metacharacters. This vulnerability is fixed in 4.5.121.

CVSS: 9.7 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Weakness (CWE): CWE-78
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Apr 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

MervinPraison PraisonAI mervinpraison:praisonai (from the name)	before 4.5.121	CNA record
praison praisonai praison:praisonai	before 4.5.121	NVD

References

References

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-2763-cj5r-c79m	x-refsource-confirm, exploit, vendor-advisory
https://github.com/MervinPraison/PraisonAI/releases/tag/v4.5.121	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.