SB2026090473 - Two vulnerabilities in HashiCorp Nomad and Nomad Enterprise

Description

This security bulletin contains information about 2 vulnerabilities.

1) Link following (CVE-ID: CVE-2026-6959)

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to manipulate file system operations.

The vulnerability exists due to improper handling of symbolic links in Nomad Enterprise when processing file system paths. A local user can use a symbolic link to manipulate file system operations.

2) Path traversal (CVE-ID: CVE-2026-7474)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to access files outside the intended directory.

The vulnerability exists due to improper limitation of a pathname to a restricted directory in Nomad Enterprise when processing crafted path input. A remote attacker can supply a crafted path to access files outside the intended directory.

Remediation

Install update from vendor's website.

References

• https://github.com/advisories/GHSA-3934-423w-4jq3
• https://github.com/advisories/GHSA-hx53-77qj-8663