How severe is CVE-2026-58138?

CVE-2026-58138 has a CVSS 3.1 base score of 9.8 (CRITICAL). EPSS estimates a 14.7% probability of exploitation in the next 30 days.

CVE-2026-58138: Orkes Conductor 3.21.21 < 3.30.2 Unauthenticated RCE

Q: What is CVE-2026-58138?

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.

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.

Severity

CVSS 4.0 · CNA9.3 CRITICAL

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

CVSS 3.1 · CNA9.8 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC · CISA-ADP

Exploitationnone

Automatableyes

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
conductor-oss	conductor	3.21.21 to <3.30.2

References

5 Links

Patches

Third-party advisories

https://www.vulncheck.com/advisories/orkes-conductor-unauthenticated-rce-via-graalvm-script-evaluators

Release notes

Release Notes

Other references

Related CVE

Record Details

Published

2026-06-30

Last updated

2026-07-14

Assigner (CNA)

VulnCheck

Credited to

seqradev

Related Tool Categories

Tool categories that test for or protect against this vulnerability class.

CWE-94 · Code Injection

Application Security Tools Penetration Testing Tools

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