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VulnerabilityPublished

CVE-2026-57124: MervinPraison PraisonAI · OS Command Injection

Affects MervinPraison PraisonAISource CVE Database V5

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Not known to be exploited · CVSS 9.8 Critical : upgrade to 4.6.59 as a priority.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.0% chance of exploitation in 30 days – higher than 63% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.6.59
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Sep 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 29 Oct 2026.

What to do

Upgrade PraisonAI and mervinpraison/PraisonAI to 4.6.59.

Affected software

ProductAffectedFixed in
MervinPraisonPraisonAIAffected
  • <4.6.59
Fixed in
  • 4.6.59
GitHubmervinpraison/PraisonAIpkg:github/mervinpraison/PraisonAIOther threatsAffected
  • <4.6.59
Fixed in
  • 4.6.59

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 4.6.59 or later, where this vulnerability is fixed. Prior to upgrading, restrict network access to the UI host applications to trusted clients only. Since the vulnerability arises from unauthenticated access to the POST /api/mcp/connect endpoint, enforcing authentication or network-level controls can mitigate exploitation risk. Patch status is confirmed fixed in 4.6.59.

Description

PraisonAI is a multi-agent teams system. Prior to 4.6.59, the default UI host applications expose POST /api/mcp/connect without mandatory authentication and accept caller-controlled command and args values that PraisonAIUI passes to StdioMCPClient to start a local process. Because the UI commands bind to 0.0.0.0 by default, a reachable unauthenticated client can execute commands as the UI service account even when the MCP handshake later fails. This vulnerability is fixed in 4.6.59.

References

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