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TI-2025-34703 Aliases CVE-2025-54999GHSA-hh28-h22f-8357

OpenBao: Timing Side-Channel in Userpass Auth Method

Priority LOW 17CWE-203Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-203.

Summary

OpenBao exists to provide a software solution to manage, store, and distribute sensitive data including secrets, certificates, and keys. In versions 0.1.0 through 2.3.1, when using OpenBao's userpass auth method, user enumeration was possible due to timing difference between non-existent users and users with stored credentials. This is independent of whether the supplied credentials were valid for the given user. This issue was fixed in version 2.3.2. To work around this issue, users may use another auth method or apply rate limiting quotas to limit the number of requests in a period of time: https://openbao.org/api-docs/system/rate-limit-quotas/.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00213 11th percentileScored 2026-11-07
Fix Fixed openbao (openbao): 2.3.2github.com/openbao/openbao (Go): 2.3.2, 0.0.0-20250806193356-4d9b5d3d6486

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
openbaoopenbao0.1.0 to before 2.3.22.3.2Patch availableCNA
—github.com/openbao/openbao (Go)0.1.0 to before 2.3.22.3.2Patch availableGHSA-hh28-h22f-8357
—github.com/openbao/openbao (Go)before 0.0.0-20250806193356-4d9b5d3d64860.0.0-20250806193356-4d9b5d3d6486Patch availableGHSA-hh28-h22f-8357
  • openbao Vendoropenbao Affected 0.1.0 to before 2.3.2 Fixed in 2.3.2 Patch available CNA
  • github.com/openbao/openbao (Go) Vendor— Affected 0.1.0 to before 2.3.2 Fixed in 2.3.2 Patch available GHSA-hh28-h22f-8357
  • github.com/openbao/openbao (Go) Vendor— Affected before 0.0.0-20250806193356-4d9b5d3d6486 Fixed in 0.0.0-20250806193356-4d9b5d3d6486 Patch available GHSA-hh28-h22f-8357

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:openbao:openbao:*:*:*:*:*:*:*:*before 2.3.2Vulnerableopenbao
  • cpe:2.3:a:openbao:openbao:*:*:*:*:*:*:*:* Versions before 2.3.2 Vulnerable ·openbao

Remediation

  • Fix · CNA openbao (openbao) Fixed in 2.3.2
  • Fix · GHSA-hh28-h22f-8357 github.com/openbao/openbao (Go) Fixed in 2.3.2 Advisory →
  • Fix · GHSA-hh28-h22f-8357 github.com/openbao/openbao (Go) Fixed in 0.0.0-20250806193356-4d9b5d3d6486 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-54999
  2. 2026-10-03 Alias added: GHSA-hh28-h22f-8357

References

Patch 1

Advisory 3

Other 3

  • TI-2024-01904 Vault Cert Auth Method Did Not Correctly Validate Non-CA Certificates CVSS 3.1CRITICAL 9.8
  • TI-2026-28381 OpenBao has Decompression Bomb via Unbounded Copy in OCI Plugin Extraction (DoS) CVSS 3.1MEDIUM 6.5
  • TI-2026-26136 OpenBao lacks user confirmation for OIDC direct callback mode CVSS 3.1CRITICAL 9.6
  • TI-2026-26137 OpenBao has Reflected XSS in its OIDC authentication error message CVSS 4.0CRITICAL 9.4
  • TI-2025-34701 OpenBao: Privileged Operator May Execute Code on the Underlying Host CVSS 3.1CRITICAL 9.1
  • TI-2025-36685 OpenBao vulnerable to denial of service via malicious JSON request processing CVSS 3.1HIGH 7.5
See all 24 →

Sources

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