High · CVSS 8.7CVE-2026-13303

Boundary vulnerable to server-side request forgery in Vault credential storeCVE-2026-13303

Answer in brief

CVE-2026-13303 records a High severity (CVSS 8.7) vulnerability in Boundary vulnerable to server-side request forgery in Vault credential store. The current sources do not mark it as known exploited. The current feed maps HashiCorp/Boundary (generic), HashiCorp/Boundary Enterprise (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 29, 2026Updated Oct 29, 2026Source checked Oct 29, 2026First seen by HOL Oct 29, 2026Material review Oct 29, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.7
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps HashiCorp/Boundary (generic), HashiCorp/Boundary Enterprise (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
HashiCorp/Boundarygeneric	>=0.21.3 <*	*
HashiCorp/Boundary Enterprisegeneric	>=0.21.3 <1.0.2	1.0.2

Recommended response

Check inventory. Check lockfiles and deployed manifests for HashiCorp/Boundary, HashiCorp/Boundary Enterprise.
Review the reported fix. Update HashiCorp/Boundary to *; HashiCorp/Boundary Enterprise to 1.0.2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Oct 29, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 29, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 29, 2026

Sources and claim methodology

Source referencediscuss.hashicorp.com

Upstream source description

HashiCorp Boundary and Boundary Enterprise are vulnerable to a server-side request forgery in the Vault credential store integration that may allow an authenticated user with permission to manage credential stores and credential libraries within a project to cause the Boundary controller to issue outbound requests to a network destination of the requester's choosing and to receive the response. This may expose endpoints reachable only from the controller's host, such as a cloud instance metadata service. This vulnerability, CVE-2026-13303, is fixed in Boundary Enterprise 1.0.2 and 0.21.6.

Quoted source text, attributed separately from HOL analysis.