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TI-2026-69320 Aliases CVE-2026-105818GHSA-fxww-hx7x-vxpc

Vault PKI ACME server issues certificates with unvalidated identities

Priority LOW 25CWE-345Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-345.

Summary

HashiCorp Vault and Vault Enterprise from 1.14.0 before 2.1.2 are affected. The PKI secrets engine ACME server does not restrict certain certificate identities that ACME challenges do not validate under the default directory policy (CWE-345). An ACME client can obtain a certificate containing unverified identity claims, which may allow impersonation toward systems that trust certificates issued by the affected Vault PKI mount.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Vault's PKI secrets engine ACME server did not restrict certificate identities that ACME challenges do not validate when issuing certificates under the default directory policy. This may allow an ACME client to obtain a certificate containing unverified identity claims, potentially enabling impersonation toward systems that trust certificates issued by the affected Vault PKI mount. This vulnerability (CVE-2026-105818) is fixed in Vault Community Edition 2.1.2, and Vault Enterprise 2.1.2, 1.21.12, 1.20.17, and 1.19.23.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0008 0th percentileScored 2026-11-07
Fix Fixed Vault (HashiCorp): 2.1.2Vault Enterprise (HashiCorp): 2.1.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
HashiCorpVault1.14.0 to before 2.1.22.1.2Patch availableCNA
HashiCorpVault Enterprise1.14.0 to before 2.1.22.1.2Patch availableCNA
  • Vault VendorHashiCorp Affected 1.14.0 to before 2.1.2 Fixed in 2.1.2 Patch available CNA
  • Vault Enterprise VendorHashiCorp Affected 1.14.0 to before 2.1.2 Fixed in 2.1.2 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:hashicorp:vault:*:*:*:*:*:*:*:*——HashiCorp
  • cpe:2.3:a:hashicorp:vault:*:*:*:*:*:*:*:* Versions — — ·HashiCorp

Remediation

Upgrade Vault Community Edition to 2.1.2. Upgrade Vault Enterprise to 2.1.2, 1.21.12, 1.20.17, or 1.19.23.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA Vault (HashiCorp) Fixed in 2.1.2
  • Fix · CNA Vault Enterprise (HashiCorp) Fixed in 2.1.2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    HashiCorp Vault Enterprise 2.1.2

    4 records Highest priority Priority LOW 4 LOW

    Other records, highest priority first

    • TI-2026-69328 Path traversal in HashiCorp Vault plugin catalog allows code executionPriority LOW 37
    • TI-2026-69326 HashiCorp Vault ACL policy checks can bypass explicit deny rulesPriority LOW 33
    • TI-2026-69329 Path traversal in Vault ACL policy cache exposes other namespacesPriority LOW 24
    Show all 4 records →
  • Release ·

    HashiCorp Vault 2.1.2

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2026-69328 Path traversal in HashiCorp Vault plugin catalog allows code executionPriority LOW 37
    • TI-2026-69326 HashiCorp Vault ACL policy checks can bypass explicit deny rulesPriority LOW 33
    Show all 3 records →

Timeline

  1. 2026-10-07 Threatist record created from CVE-2026-105818
  2. 2026-10-08 Alias added: GHSA-fxww-hx7x-vxpc
  3. 2026-10-08 CISA SSVC decision points changed
  4. 2026-10-08 Priority changed: MEDIUM → LOW

References

Other 1

  • 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
See all 246 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences