CVE-2026-102260

Nomad vulnerable to cross-namespace information disclosure in multiple endpoints

4.3 Medium

HashiCorp Nomad and Nomad Enterprise are vulnerable to cross-namespace authorization bypasses in several read-only API endpoints that may allow an authenticated user with read permissions in one namespace to view information about objects in other namespaces. This vulnerability (CVE-2026-102260) is fixed in Nomad Community Edition 2.1.1 and Nomad Enterprise 2.1.0, 1.11.12, and 1.10.18.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: None

Exploit likelihood

0.18%Unchanged since Oct 30, 2026

What each source reports

CVE List Score used 4.3

Nomad vulnerable to cross-namespace information disclosure in multiple endpoints

Record: CVE-2026-102260
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-863
Updated: 2026-11-02

EUVDEUVD-2026-113317 4.3

Record: EUVD-2026-113317
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-v86q-pc4q-725p 4.3

HashiCorp Nomad and Nomad Enterprise are vulnerable to cross-namespace authorization bypasses in...

HashiCorp Nomad and Nomad Enterprise are vulnerable to cross-namespace authorization bypasses in several read-only API endpoints that may allow an authenticated user with read permissions in one namespace to view information about objects in other namespaces. This vulnerability (CVE-2026-102260) is fixed in Nomad Community Edition 2.1.0 and Nomad Enterprise 2.1.0, 1.11.12, and 1.10.18.

Record: GHSA-v86q-pc4q-725p
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-863
Updated: 2026-11-02

NVD 4.3

Record: CVE-2026-102260
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-863
Updated: 2026-11-02

OSV 4.3

Nomad vulnerable to cross-namespace information disclosure in multiple endpoints

Record: CVE-2026-102260
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-863
Updated: 2026-11-04

OSVUBUNTU-CVE-2026-102260 4.3

Record: UBUNTU-CVE-2026-102260
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-05

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`nomad` Ubuntu:18.04:LTS	All versions, plus listed versions 0.4.0+dfsg-1	None known
`nomad` Ubuntu:20.04:LTS	All versions, plus listed versions 0.8.7+dfsg1-1ubuntu1	None known

History

History
Recorded	Changed	Sources
Nov 4, 2026	affected, aliases, references	OSV
Nov 4, 2026	facts, references	OSV
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-102260 is a medium vulnerability (CVSS 4.3) in Hashicorp Nomad, published October 29, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.18%, the 7th percentile. No source names a fixed version.