OpenBao
CVE-2025-62705
MEDIUM
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessUnknown prerequisite access
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ExploitTrigger uncharacterized vulnerability in OpenBao
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ImpactAchieve unconfirmed impact
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A09:2025 - Security Logging & Alerting Failures
ASVS 5.0
V16 - Security Logging and Error Handling Log data sanitization
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| Exploitation Conditions | Exploitation conditions cannot be determined from available data. No CVSS vector was provided, and the CVE description contains no technical details about required configuration, authentication level, network accessibility, or affected feature. Authentication requirements, attack vector (network vs. local), and complexity are all unknown. The sole confirmed fact is that Alpine Linux openbao packages prior to 2.4.3-r0 contain the vulnerable code. Security teams cannot reliably assess exposure without a published CVSS vector or vendor technical advisory. |
| Impact | Risk assessment is severely constrained by missing data. No CVSS vector has been published, meaning attack vector, complexity, required privileges, user interaction, and scope are all unknown. The EPSS score of 0.05% at the 16th percentile indicates a low probability of exploitation in the near term, consistent with a vulnerability that lacks public exploit code and has not attracted broad attacker attention. No KEV listing exists. The absence of a CVSS score and description is itself a risk signal - it may indicate the vulnerability is still being triaged, the vendor chose minimal disclosure, or the severity is low. Security teams should not deprioritize solely based on EPSS given the lack of CVSS context, but current signals do not support treating this as an urgent priority. |
| Exploit ScenarioDerived | No exploit scenario can be constructed with confidence because the vulnerability description, attack vector, and affected component within OpenBao are not disclosed. No public exploit code or proof-of-concept has been identified at time of analysis. |
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Alert meAnalysisAIv1 – May 27, 2026
OpenBao, the open-source secrets management fork of HashiCorp Vault, received a security fix in Alpine Linux package version 2.4.3-r0. The nature of the underlying vulnerability is not disclosed in available intelligence sources - no CVE description, CVSS vector, or CWE has been published. With an EPSS score of 0.05% (16th percentile), exploitation probability is very low at time of analysis, and no public exploit or CISA KEV listing exists.
RemediationAI
Upgrade the Alpine Linux openbao package to version 2.4.3-r0 or later using the standard Alpine package manager: 'apk upgrade openbao'. This is the only confirmed fix identified at time of analysis. No upstream OpenBao release version is independently confirmed from available data; administrators running OpenBao outside Alpine Linux should consult the OpenBao project's own security advisories and GitHub releases to determine the corresponding patched upstream version. No workarounds or compensating controls are documented because the vulnerability's nature (attack vector, affected component, exploitation mechanism) is unknown.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in go
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Technical ContextAI · show details
OpenBao is an open-source fork of HashiCorp Vault maintained by the Linux Foundation, designed for secrets management, encryption-as-a-service, and privileged access control. The fix was delivered as Alpine Linux package version 2.4.3-r0. No CWE classification is available, making it impossible to characterize the root cause class (e.g., injection, memory corruption, access control bypass). No CPE string was provided; the affected component is inferred to be the openbao Alpine Linux package prior to 2.4.3-r0.
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Severity by source
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Primary rating from Vendor (vendor:alpine) · only source for this CVE.
CVSS VectorVendor: vendor:alpine
Lifecycle Timeline
1DescriptionCVE.org
Alpine Linux: openbao fixed in 2.4.3-r0
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
Affected Products (CPE)CVE.org
Vault and Vault Enterprise (“Vault”) TLS certificate auth method did not correctly validate client certificates when con
Timing-based leakage of the single recovery token in OpenBao lets a remote, unauthenticated attacker who can reach the i
OpenBao exists to provide a software solution to manage, store, and distribute sensitive data including secrets, certifi
Vault’s SSH secrets engine did not require the valid_principals list to contain a value by default. Rated high severity
Cross-account IAM role impersonation in OpenBao's auth-aws plugin (versions up to and including 0.1.0) lets an authentic
OpenBao versions prior to 2.6.0 fail to reject syntax-significant characters when templated identity data is substituted
Unauthenticated denial of service in OpenBao 2.4.0 and earlier allows remote attackers to crash the server or exhaust CP
OpenBao is an open source identity-based secrets management system. Rated high severity (CVSS 7.5), this vulnerability i
OpenBao versions before 2.3.0 contain an unauthenticated denial-of-service vulnerability in the root rekey and recovery
Cross-namespace privilege escalation in OpenBao 2.3.0 through 2.6.2 allows an authenticated token holder to attach speci
Vault Community and Vault Enterprise (“Vault”) clusters using Vault’s Integrated Storage backend are vulnerable to a den
A privileged Vault operator with write permissions to the root namespace’s identity endpoint could escalate their own or
NVD
CVE.org
EPSS
GitHub
Exploit-DB