PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-14978 Hashicorp CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-19T21:16:54.007Z and has not been modified since then. CVE-2026-14978 is a medium-severity vulnerability in Hashicorp Go-Slug, a tool used for creating Terraform slugs. The issue arises from improper handling of Unicode normalization during path matching, which could allow a local attacker to bypass .terraformignore exclusions. This could lead to sensitive files being included in Terraform slug uploads. The vulnerability affects Go-Slug versions from 0.4.0 up to but not including 0.18.3. The CVSS score for this vulnerability is 5.5, indicating a medium severity level. Users of affected Go-Slug versions should review and apply patches or mitigations to prevent potential sensitive file exposure in Terraform configurations.

Vendor
Hashicorp
Product
Go-Slug
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-19
Original CVE updated
2026-09-04
Advisory published
2026-08-19
Advisory updated
2026-09-04

Who should care

Hashicorp Go-Slug users, Terraform administrators, and security teams responsible for infrastructure as code (IaC) deployments should be aware of this vulnerability. The issue could potentially lead to sensitive file exposure in Terraform configurations, making it important for users to review and apply patches or mitigations.

Technical summary

CVE-2026-14978 is a medium-severity vulnerability in Hashicorp Go-Slug, a tool used for creating Terraform slugs. The issue arises from improper handling of Unicode normalization during path matching, which could allow a local attacker to bypass .terraformignore exclusions. This could lead to sensitive files being included in Terraform slug uploads. The vulnerability affects Go-Slug versions from 0.4.0 up to but not including 0.18.3. The CVSS score for this vulnerability is 5.5, indicating a medium severity level.

Defensive priority

Medium-severity local attack vector vulnerability in Hashicorp Go-Slug, requiring immediate review.

Recommended defensive actions

  • Review and apply patches for Hashicorp Go-Slug versions up to 0.18.2.
  • Inventory Go-Slug installations for potential exposure.
  • Implement compensating controls to monitor and restrict sensitive file access.
  • Verify .terraformignore configurations for proper exclusions.
  • Monitor for unusual Terraform slug upload activity.

Evidence notes

The CVE-2026-14978 record indicates a medium-severity vulnerability in Hashicorp Go-Slug versions from 0.4.0 up to but not including 0.18.3. The issue involves improper handling of Unicode normalization during path matching, potentially allowing local attackers to bypass .terraformignore exclusions and include sensitive files in Terraform slug uploads. Evidence is based on official CVE and NVD records, with additional reference to a vendor advisory from IBM.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-14978 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-14978

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-14978 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-14978

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.