What’s Vulnerable › Vulnerabilities

CVE-2026-58138: Orkes Conductor 3.21.21 < 3.30.2 Unauthenticated RCE via GraalVM Script Evaluators

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 9.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-06-30 · updated 2026-10-25
• Weakness: CWE-94

Description

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.

Affected products

• conductor-oss conductor: from 3.21.21 before 3.30.2 — fixed in 3.30.2

How to fix

Upgrade to a fixed version: conductor-oss conductor 3.30.2. Check the vendor advisory for mitigations.

References

• https://github.com/conductor-oss/conductor/commit/87a7d96aabbb706d6e84f812b93da5165028d18f
• https://github.com/conductor-oss/conductor/commit/c691e35e768caeb802c9f06ecdd9674c80081af1
• https://github.com/conductor-oss/conductor/releases/tag/v3.30.2
• https://www.cve.org/CVERecord?id=CVE-2025-26074
• https://www.vulncheck.com/advisories/orkes-conductor-unauthenticated-rce-via-graalvm-script-evaluators

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