Vault May Include Sensitive Data in Error Logs When Using the KV v2 Plugin
Priority LOW 29CWE-209Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-209.
Summary
Vault Community and Vault Enterprise Key/Value (kv) Version 2 plugin may unintentionally expose sensitive information in server and audit logs when users submit malformed payloads during secret creation or update operations via the Vault REST API. This vulnerability, identified as CVE-2025-4166, is fixed in Vault Community 1.19.3 and Vault Enterprise 1.19.3, 1.18.9, 1.17.16, 1.16.20.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00457 39th percentileScored 2026-11-07
Fix Partial Vault (HashiCorp): 1.19.2Vault Enterprise (HashiCorp): 1.19.2+1 more productRed Hat: 1 without a fix
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| HashiCorp | Vault | 0.3.0 to before 1.19.2 | 1.19.2 | Patch available | CNA |
| HashiCorp | Vault Enterprise | 0.10.0 to before 1.19.2 | 1.19.2 | Patch available | CNA |
| — | github.com/hashicorp/vault (Go) | 0.3.0 to before 1.19.3 | 1.19.3 | Patch available | GHSA-gcqf-f89c-68hv |
- Vault VendorHashiCorp Affected 0.3.0 to before 1.19.2 Fixed in 1.19.2 Patch available CNA
- Vault Enterprise VendorHashiCorp Affected 0.10.0 to before 1.19.2 Fixed in 1.19.2 Patch available CNA
- github.com/hashicorp/vault (Go) Vendor— Affected 0.3.0 to before 1.19.3 Fixed in 1.19.3 Patch available GHSA-gcqf-f89c-68hv
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:* | 0.3.0 to before 1.16.20 | Vulnerable | HashiCorp |
| cpe:2.3:a:hashicorp:vault:*:*:*:*:-:*:*:* | 0.3.0 to before 1.19.3 | Vulnerable | HashiCorp |
| cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:* | 1.17.0 to before 1.17.16; 1.18.0 to before 1.18.9; 1.19.0 to before 1.19.3 | Vulnerable | HashiCorp |
| cpe:2.3:a:openbao:openbao:*:*:*:*:*:*:*:* | before 2.2.2 | Vulnerable | openbao |
- cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:* Versions 0.3.0 to before 1.16.20 Vulnerable ·HashiCorp
- cpe:2.3:a:hashicorp:vault:*:*:*:*:-:*:*:* Versions 0.3.0 to before 1.19.3 Vulnerable ·HashiCorp
- cpe:2.3:a:hashicorp:vault:*:*:*:*:enterprise:*:*:* Versions 1.17.0 to before 1.17.16; 1.18.0 to before 1.18.9; 1.19.0 to before 1.19.3 Vulnerable ·HashiCorp
- cpe:2.3:a:openbao:openbao:*:*:*:*:*:*:*:* Versions before 2.2.2 Vulnerable ·openbao
Remediation
- Fix · CNA Vault (HashiCorp) Fixed in 1.19.2
- Fix · CNA Vault Enterprise (HashiCorp) Fixed in 1.19.2
- Fix · GHSA-gcqf-f89c-68hv github.com/hashicorp/vault (Go) Fixed in 1.19.3 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Openshift Data Foundation 4 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-4166
- 2026-10-03 Alias added: GHSA-gcqf-f89c-68hv
References
More HashiCorp Vault vulnerabilities
- TI-2024-01904 Vault Cert Auth Method Did Not Correctly Validate Non-CA Certificates CVSS 3.1CRITICAL 9.8
- TI-2022-19053 An issue was discovered in HashiCorp Vault and Vault Enterprise before 1.11.3. CVSS 3.1CRITICAL 9.1
- TI-2020-17874 The official vault docker images before 0.11.6 contain a blank password for a root user. CVSS 3.1CRITICAL 9.8
- TI-2020-10142 HashiCorp Vault and Vault Enterprise 1.4.0 and 1.4.1, when configured with the GCP… CVSS 3.1CRITICAL 9.8
- TI-2026-04407 Vault Vulnerable to Server-Side Request Forgery in ACME Challenge Validation via Attacker-Controlled DNS CVSS 3.1HIGH 8.6
- TI-2025-05421 Arbitrary Remote Code Execution via Plugin Catalog Abuse CVSS 3.1CRITICAL 9.1
Sources
- CVE-2025-4166 · CVE Program
- CVE-2025-4166 · NVD
- FIRST EPSS
- GHSA-gcqf-f89c-68hv · GitHub Advisory Database · CC BY 4.0
- CVE-2025-4166 · 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