Server-side request forgery in Boundary Vault credential store
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
HashiCorp Boundary from 0.21.3 and Boundary Enterprise from 0.21.3 before 1.0.2 are affected. The Vault credential store integration has a server-side request forgery flaw (CWE-918) that lets the controller send outbound requests to a destination the user chooses and return the response. An authenticated user with permission to manage credential stores and credential libraries within a project can exploit it, which may expose endpoints reachable only from the controller's host, such as a cloud instance metadata service.
Written with Claude Haiku 5.5 from the sources below · 2026-11-07
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Upgrade Boundary Enterprise to 1.0.2 or 0.21.6. The sources list no fixed version for Boundary.
Written with Claude Haiku 5.5 from the sources below · 2026-11-07
- Fix · CNA Boundary Enterprise (HashiCorp) Fixed in 1.0.2
Vendor assessments
Timeline
- 2026-10-29 Threatist record created from CVE-2026-13303
- 2026-10-29 Alias added: GHSA-ff4v-fpcj-mjf6
- 2026-10-30 CISA SSVC decision points changed
- 2026-10-30 Priority changed: MEDIUM → LOW
- 2026-11-07 Affected versions changed · Red Hat
- 2026-11-07 CVSS score added · Red Hat
References
More HashiCorp vulnerabilities
- TI-2024-01904 Vault Cert Auth Method Did Not Correctly Validate Non-CA Certificates CVSS 3.1CRITICAL 9.8
- TI-2021-18437 HashiCorp Consul Enterprise before 1.8.17, 1.9.x before 1.9.11, and 1.10.x before 1.10.4… CVSS 3.1HIGH 8.8
- TI-2026-06570 Nomad vulnerable to path traversal in dynamic host volume which may lead to code execution CVSS 3.1HIGH 8.8
- TI-2020-17753 The official Consul Docker images 0.7.1 through 1.4.2 contain a blank password for a root… CVSS 3.1CRITICAL 9.8
- TI-2026-13641 consul-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode CVSS 3.1CRITICAL 10.0
- TI-2026-13778 terraform-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode CVSS 3.1CRITICAL 10.0
Sources
- CVE-2026-13303 · CVE Program
- CVE-2026-13303 · NVD
- FIRST EPSS
- GHSA-ff4v-fpcj-mjf6 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-13303 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences