CVE-2026-58138
Confirmed PUBLISHEDOrkes Conductor 3.21.21 < 3.30.2 Unauthenticated RCE via GraalVM Script Evaluators
Not yet in CISA KEV
Recommended Action
Prioritize immediate patching and validate internet-facing exposure. Monitor for matching exploitation attempts in your environment.
At a Glance
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.
- CVE Published
- Jun 30, 2026
- Exploitation Reported
- Jul 25, 2026
- CVSS
- 9.3 Critical
- EPSS
- 1.2%
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| conductor-oss |
conductor
|
3.21.21 to < 3.30.2 |
Affected |
CVE References
- Patch Commit (1) github.com · Patch https://github.com/conductor-oss/conductor/commit/87a7d96aabbb706d6e8...
- Patch Commit (2) github.com · Patch https://github.com/conductor-oss/conductor/commit/c691e35e768caeb802c...
- Third-Party Advisory — vulncheck.com vulncheck.com · Third-Party Advisory https://www.vulncheck.com/advisories/orkes-conductor-unauthenticated-...
- Release Notes github.com · Release Notes https://github.com/conductor-oss/conductor/releases/tag/v3.30.2
- Related CVE cve.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2025-26074
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| KEVIntel First | 2026-07-27 10:20 UTC |
Operational indicators for this CVE are listed on the Detection tab.
Observed Exploitation Attempts
Exploitation attempts against this vulnerability observed first-hand by KEVIntel private honeypots over the last 30 days.
- Attempts Observed
- 1
- Unique Attacker IPs
- 1
- Attacker Countries
- 🇵🇰
- Sensors Observed
- 1
Exploitation Attempts Over the Last 7 Days
First observed (all time) 2026-07-25 12:51 UTC · Last observed 2026-07-25 12:51 UTC
See more exploitation detail
- Pro — sensor software/region breakdown and 24h/7d window summaries.
- Enterprise — raw attacker IPs, request paths, User-Agents, and payloads.
Indicators of Compromise (IoCs)
Attacker IP IoCs observed in KEVIntel sensors are available to Pro and Enterprise accounts on the Detection tab and through the Pro API.
Learn about Pro API accessObserved Detection Signals (30d)
Aggregate counts from KEVIntel sensor telemetry for this CVE.
- Distinct request paths
- 1
- Distinct User-Agents
- 1
The specific request paths and User-Agents attackers are using are available on Pro and Enterprise plans.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
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/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitation Status
Exploited in the wild
Recorded 2026-07-25 12:51:06 UTC · KEVIntel
Active exploitation observed
Recorded 2026-07-25 12:51:06 UTC · KEVIntel sensor
Proof of concept available
Recorded 2026-06-30 19:48:56 UTC · GitHub
Weaknesses (CWE)
-
Improper Control of Generation of Code ('Code Injection')
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
github · Created 2026-07-27 00:38:25 UTC · 0 stars
github · Created 2026-07-22 17:07:34 UTC · 0 stars
CVE-2026-58138 - Conductor (3.21.21..<3.30.2) unauthenticated RCE via INLINE GraalVM evaluator
github · Created 2026-07-15 19:07:52 UTC · 1 stars
CVE-2026-58138 — Conductor (3.21.21..<3.30.2) unauthenticated RCE via INLINE GraalVM evaluator (HostAccess.ALL). Lab + PoC, verified e2e (root).
github · Created 2026-06-30 19:48:56 UTC · 0 stars
CVE-2026-58138 — Conductor (3.21.21..<3.30.2) unauthenticated RCE via INLINE GraalVM evaluator (HostAccess.ALL). Lab + PoC, verified e2e (root).
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
12:51 UTC 2 days ago12:51 UTC · 2 days ago
Observed by KEVIntel sensors
Evidence-backed exploitation signal
-
12:51 UTC 2 days ago12:51 UTC · 2 days ago
Indicator of compromise added
Indicators of compromise recorded
-
19:48 UTC 27 days ago19:48 UTC · 27 days ago
Public PoC available
Public proof-of-concept code published
-
18:44 UTC 27 days ago18:44 UTC · 27 days ago
CVE published
Vulnerability disclosed publicly
-
14:13 UTC 28 days ago14:13 UTC · 28 days ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2026-58138
{
"cve_id": "CVE-2026-58138",
"title": "Orkes Conductor 3.21.21 < 3.30.2 Unauthenticated RCE via GraalVM Script Evalu...",
"affected_vendor": "conductor-oss",
"affected_product": "conductor",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 9.3,
"epss_score": 0.01155,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": true
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}