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CVE-2026-39946— OpenBao allows SQL Injection in PostgreSQL database secrets engine

Quick assessment

Affected
openbao openbao
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenBao是OpenBao开源的一个敏感数据管理软件。 OpenBao 2.5.3之前版本存在SQL注入漏洞，该漏洞源于在PostgreSQL数据库密钥引擎中撤销角色权限时，未对模式名称使用正确的数据库引用，可能导致角色撤销失败或SQL注入攻击。

AI Predicted 8.1 Difficulty: Easy EPSS 0.39% · P31
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I. Basic Information for CVE-2026-39946

Vulnerability Information
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Vulnerability Title
OpenBao allows SQL Injection in PostgreSQL database secrets engine
Source: CVE Program / CVE List V5
Vulnerability Description
OpenBao is an open source identity-based secrets management system. Prior to version 2.5.3, when OpenBao revoked privileges on a role in the PostgreSQL database secrets engine, OpenBao failed to use proper database quoting on schema names provided by PostgreSQL. This could lead to role revocation failures, or more rarely, SQL injection as the management user. This vulnerability was original from HashiCorp Vault. The vulnerability is addressed in v2.5.3. As a workaround, audit table schemas and ensure database users cannot create new schemas and grant privileges on them.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5
Vulnerability Title
OpenBao SQL注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenBao是OpenBao开源的一个敏感数据管理软件。 OpenBao 2.5.3之前版本存在SQL注入漏洞，该漏洞源于在PostgreSQL数据库密钥引擎中撤销角色权限时，未对模式名称使用正确的数据库引用，可能导致角色撤销失败或SQL注入攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
openbao openbao < 2.5.3 -

II. Public POCs for CVE-2026-39946

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III. Intelligence Information for CVE-2026-39946

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Same Patch Batch · openbao · 2026-04-21 · 4 CVEs total

CVE-2026-39396 3.1 LOW OpenBao has Decompression Bomb via Unbounded Copy in OCI Plugin Extraction (DoS)
CVE-2026-39388 OpenBao's Certificate Authentication Allows Token Renewal With Different Certificate
CVE-2026-40264 OpenBao's Token Store Allows Cross-Namespace Renewal, Revocation

IV. Related Vulnerabilities

Same product: openbao
Same vendor: openbao
Same weakness: CWE-89

V. Comments for CVE-2026-39946

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