CVE-2026-58138
Orkes Conductor 3.21.21 < 3.30.2 Unauthenticated RCE via GraalVM Script Evaluators
- Published
- Jun 30, 2026
- Updated
- Jul 14, 2026
- Assigning CNA
- VulnCheck
- Evidence observed
- Aug 10, 2026
Primary CVSS
nvd · CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XLow · next 30 days
- Percentile
- 95.2%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
Orkes Conductor 3.21.21 before 3.30.2 contains an unauthenticated remote code execution vulnerability that allows remote attackers to execute arbitrary OS commands by submitting inline workflow definitions containing malicious JavaScript or Python expressions to the workflow API endpoint prior to authentication. Attackers can exploit unsandboxed GraalVM evaluators configured with HostAccess.ALL or allowAllAccess(true) through INLINE, LAMBDA, DO_WHILE, and SWITCH task types to invoke arbitrary system commands via Java reflection or direct subprocess calls.
Sources
7- CVE-2026-58138Informational
Defensive security research repository detailing CVE-2026-58138, an unauthenticated RCE in Conductor via GraalVM. Provides technical analysis, affected versions, mitigation steps, and detection guidance for blue teams.
- CVE-2026-58138Exploit
CVE-2026-58138 - Conductor (3.21.21..<3.30.2) unauthenticated RCE via INLINE GraalVM evaluator
Responsible use
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