CVE-2025-4166
Last modified
CVE-2025-4166 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.34% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Hashicorp | Vault | >= 0.3.0, < 1.16.20 |
| Hashicorp | Vault | >= 0.3.0, < 1.19.3 |
| Hashicorp | Vault | >= 1.17.0, < 1.17.16 |
| Hashicorp | Vault | >= 1.18.0, < 1.18.9 |
| Hashicorp | Vault | >= 1.19.0, < 1.19.3 |
| Openbao | Openbao | < 2.2.2 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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