Nomad is widely used for orchestration; flaw allows workload-to-host escape and potential root RCE on clients — enterprise-impacting and requires immediate remediation.
CVE-2026-107347
Symlink escape in Nomad allows workload to achieve root code execution on client
Is CVE-2026-107347 being exploited?
Not confirmed. CVE-2026-107347 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.13% probability of exploitation in the next 30 days.
How severe is CVE-2026-107347?
CVE-2026-107347 is rated High with a CVSS score of 8.4. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-107347?
Yes. A fix has been recorded for CVE-2026-107347. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-107347 affect?
CVE-2026-107347 affects HashiCorp Nomad (versions prior to 2.1.1), Nomad Enterprise (versions prior to 2.1.0, 1.11.12, 1.10.18). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-107347?
Upgrade Nomad clients to fixed versions, avoid running clients as root, and audit workloads
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Malicious job can follow symlinks to modify host files; if Nomad client runs as root, attacker can achieve root code execution on the host.
Immediate action required
- affected>= 0.3.0 and < 2.1.1
- affected>= 0.3.0 and < 2.1.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.