CVE-2026-58138
CriticalExploitedPublic exploitOrkes 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…
Published Jun 30, 2026 · Updated Aug 12, 2026
Key Facts
Patch immediately- CVE-2026-58138 is a critical-severity vulnerability (CVSS 9.3 v4) affecting conductor.
- It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Jul 27, 2026. Public exploit code is available.
- EPSS estimates a 15% probability of exploitation in the next 30 days.
- Fixed versions are available, including conductor 3.30.2.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v4
9.3
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
EPSS (30-day exploit likelihood)
15%
Higher than 96.6% of all scored CVEs
Exploited in the wild
Yes
2 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2026-58138 brief as a PDF
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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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Jul 27, 2026 | n/a | Not reported |
| CIRCL KEV | Jul 27, 2026 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| conductor | >= 3.21.21 | 3.30.2 |
Patched Releases
conductor
3.30.2
Timeline
Publicly disclosed
Jun 30, 2026
Added to Industry KEV feed
Jul 27, 2026
Added to CIRCL KEV
Jul 27, 2026
Last updated
Aug 12, 2026
Weakness Type
- CWE-94 Improper Control of Generation of Code ('Code Injection')
References
- advisoryhttps://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58138.json
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2026-58138
- exploitVulnCheck exploitation report
- exploitExploitDB-52633
- exploitVulnCheck exploitation report
FAQ
Common Questions.
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.
Affected: conductor versions >= 3.21.21. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Jul 27, 2026.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including conductor 3.30.2.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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