Unauthenticated Remote Code Execution in Orkes Conductor by Orkes
CVE-2026-58138

9.3CRITICAL

Key Information:

Vendor

Conductor-oss

Status
Conductor
Vendor
CVE Published:
30 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-58138?

An unauthenticated remote code execution vulnerability in Orkes Conductor versions prior to 3.30.2 could allow remote attackers to execute arbitrary operating system commands by submitting malicious JavaScript or Python expressions through workflow definitions to the workflow API endpoint without authentication. The exploit leverages unsandboxed GraalVM evaluators configured with extensive access permissions, enabling the invocation of arbitrary system commands on the server.

Affected Version(s)

conductor 3.21.21

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-58138
Created by Ch4120N

CVE-2026-58138-Conductor-Unauth-RCE
Created by BiiTts

CVE-2026-58138
Created by 0xgh057r3c0n

References

https://github.com/conductor-oss/conductor/releases/tag/v...
release-notes
https://github.com/conductor-oss/conductor/commit/87a7d96...
patch
https://github.com/conductor-oss/conductor/commit/c691e35...
patch

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

seqradev
.