Skip to main content
VulnerabilityPublished

CVE-2026-40088: MervinPraison PraisonAI · OS Command Injection

Affects MervinPraison PraisonAISource CVE Database V5

0
Compare

Not known to be exploited · CVSS 9.7 Critical : upgrade to 4.5.121 as a priority.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
9.7Critical
How severe the flaw is on the 0–10 CVSS scale.

Contested

Critical score, yet low EPSS after six months
EPSS
0.4% chance of exploitation in 30 days – higher than 36% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.5.121
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade PraisonAI and mervinpraison/PraisonAI to 4.5.121.

Affected software

ProductAffectedFixed in
MervinPraisonPraisonAIAffected
  • <4.5.121
Fixed in
  • 4.5.121
GitHubmervinpraison/PraisonAIpkg:github/mervinpraison/PraisonAIOther threatsAffected
  • <4.5.121
Fixed in
  • 4.5.121

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade PraisonAI to version 4.5.121 or later, where this vulnerability is fixed. Since the product is not a cloud service, remediation requires applying this official fix. Patch status is confirmed by the vendor advisory indicating the fix in 4.5.121. No alternative mitigations are specified.

Description

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.

References

Community reviews

Loading reviews…