Security readout for executives and security teams
Plain-English summary
CVE-2019-14802 is an information disclosure issue in HashiCorp Nomad. Affected versions could reveal unintended environment variables to a task during template rendering. The business risk is exposure of configuration or secrets available in those variables, not system takeover based on the supplied sources.
Executive priority
Treat this as a moderate-priority remediation if legacy Nomad versions are present. Prioritize clusters handling sensitive service credentials, because the main business risk is unintended disclosure of environment-stored secrets.
Technical view
HashiCorp Nomad 0.5.0 through 0.9.4, fixed in 0.9.5, exposes unintended environment variables in nomad/client/allocrunner/taskrunner/template during template rendering. The issue is classified as CWE-200 with CVSS 3.1 score 5.3, AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
Likely exposure
Exposure is limited to environments running HashiCorp Nomad 0.5.0 through 0.9.4. Risk is higher where task environment variables contain credentials, tokens, service endpoints, or sensitive configuration used during template rendering.
Exploitation context
The source bundle does not show CISA KEV listing, active exploitation, or exploit availability. The CVSS vector indicates low-complexity, unauthenticated network attack characteristics, but the documented impact is confidentiality-only and limited in severity.
Researcher notes
Evidence is narrow but consistent: affected version range, fixed version, component path, CWE-200, and CVSS are provided. The bundle lacks detailed vendor advisory text, exploit notes, or operational mitigations beyond upgrading to the fixed version.
Mitigation direction
- Upgrade HashiCorp Nomad to 0.9.5 or later where this issue is fixed.
- Inventory Nomad clients and clusters for versions 0.5.0 through 0.9.4.
- Review task templates for unintended access to environment variables during rendering.
- Rotate credentials that were accessible as environment variables to affected rendering tasks.
- Check current HashiCorp guidance for any deployment-specific remediation notes.
Validation and detection
- Confirm Nomad versions across servers, clients, images, and deployment automation.
- Identify jobs using template rendering on affected Nomad versions.
- Review environment variables supplied to affected tasks for sensitive values.
- Check whether sensitive variables were accessible to rendering tasks before upgrade.
- Verify upgrade completion and rerun configuration review after remediation.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2019-14802 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N3.91.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source materials
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.