Orkes Conductor 3.21.21 < 3.30.2 Unauthenticated RCE via GraalVM Script Evaluators
85Vexday Risk Score
Patch now. It exploitation observed by VulnCheck and has a working public exploit.
ssvc Actcvss 9.3epss 9.1%
from disclosure to weapon0 days
Published on NVDJun 30
1st PoCJun 30
VulnCheck+27d
exploitation probability
9.1%top 5% of all CVEs
observed exploitation
yesVulnCheck
10 public exploit(s)
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.
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
Affected products
conductor-oss · conductorpublic PoCs found — 10
exploitdbwww.exploit-db.com/exploits/52633unverifiedgithubgithub.com/Ch4120N/CVE-2026-58138★ 2githubgithub.com/Procjevt/CVE-2026-58138★ 0githubgithub.com/BiiTts/CVE-2026-58138-Conductor-Unauth-RCE★ 0githubgithub.com/0xgh057r3c0n/CVE-2026-58138★ 0githubgithub.com/seqra/cve-2026-58138★ 0vulncheckvulncheck.com/xdb/06cfaea3bf99unverifiedvulncheckvulncheck.com/xdb/0eb9ba83a244unverifiedvulncheckvulncheck.com/xdb/eb7362a14121unverifiedvulncheckvulncheck.com/xdb/17e059b66c88unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://github.com/conductor-oss/conductor/commit/87a7d96aabbb706d6e84f812b93da5165028d18fhttps://github.com/conductor-oss/conductor/commit/c691e35e768caeb802c9f06ecdd9674c80081af1https://github.com/conductor-oss/conductor/releases/tag/v3.30.2https://www.cve.org/CVERecord?id=CVE-2025-26074https://www.vulncheck.com/advisories/orkes-conductor-unauthenticated-rce-via-graalvm-script-evaluators