CVE-2026-58138
Orkes Conductor 3.21.21 < 3.30.2 Unauthenticated RCE via GraalVM Script Evaluators
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.
INFO
Published Date :
June 30, 2026, 7:17 p.m.
Last Modified :
July 14, 2026, 10:17 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | CRITICAL | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
Solution
- Update Orkes Conductor to version 3.30.2 or later.
- Review and sanitize user-provided workflow definitions.
- Ensure GraalVM evaluators are properly sandboxed.
- Restrict HostAccess for GraalVM evaluators.
Public PoC/Exploit Available at Github
CVE-2026-58138 has a 3 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-58138.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-58138 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-58138
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
CVE-2026-58138 — Conductor (3.21.21..<3.30.2) unauthenticated RCE via INLINE GraalVM evaluator (HostAccess.ALL). Lab + PoC, verified e2e (root).
bug-bounty code-injection conductor cve-2026-58138 cybersecurity exploit graalvm netflix-conductor orkes-conductor poc proof-of-concept python-exploit rce red-team remote-code-execution sandbox-bypass security-research unauthenticated vulnerability-research cwe-94
Python
None
Java Python
CVE-2026-58138 — Conductor (3.21.21..<3.30.2) unauthenticated RCE via INLINE GraalVM evaluator (HostAccess.ALL). Lab + PoC, verified e2e (root).
conductor graalvm java orkes poc rce security-research unauthenticated workflow-orchestration cve-2026-58138
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-58138 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-58138 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Jul. 14, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://github.com/conductor-oss/conductor', 'vendor': 'conductor-oss', 'product': 'conductor', 'versions': [{'status': 'affected', 'version': '3.21.21', 'lessThan': '3.30.2', 'versionType': 'semver'}], 'defaultStatus': 'affected'}] [{'repo': 'https://github.com/conductor-oss/conductor', 'vendor': 'conductor-oss', 'product': 'conductor', 'versions': [{'status': 'affected', 'version': '3.21.21', 'lessThan': '3.30.2', 'versionType': 'semver'}], 'packageURL': 'pkg:github/conductor-oss/conductor', 'defaultStatus': 'affected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 01, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-58138', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-07-01T15:02:06.515465Z'} -
New CVE Received by [email protected]
Jun. 30, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://github.com/conductor-oss/conductor', 'vendor': 'conductor-oss', 'product': 'conductor', 'versions': [{'status': 'affected', 'version': '3.21.21', 'lessThan': '3.30.2', 'versionType': 'semver'}], 'defaultStatus': 'affected'}] Added 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. Added CVSS V4.0 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:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-94 Added Reference https://github.com/conductor-oss/conductor/commit/87a7d96aabbb706d6e84f812b93da5165028d18f Added Reference https://github.com/conductor-oss/conductor/commit/c691e35e768caeb802c9f06ecdd9674c80081af1 Added Reference https://github.com/conductor-oss/conductor/releases/tag/v3.30.2 Added Reference https://www.cve.org/CVERecord?id=CVE-2025-26074 Added Reference https://www.vulncheck.com/advisories/orkes-conductor-unauthenticated-rce-via-graalvm-script-evaluators