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TI-2025-34706 Aliases CVE-2025-55003GHSA-rxp7-9q75-vj3p

OpenBao Login MFA Bypasses Rate Limiting and TOTP Token Reuse

Priority LOW 25CWE-307Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-307.

Summary

OpenBao exists to provide a software solution to manage, store, and distribute sensitive data including secrets, certificates, and keys. In versions 2.3.1 and below, OpenBao's Login Multi-Factor Authentication (MFA) system allows enforcing MFA using Time-based One Time Password (TOTP). Due to normalization applied by the underlying TOTP library, codes were accepted which could contain whitespace; this whitespace could bypass internal rate limiting of the MFA method and allow reuse of existing MFA codes. This issue was fixed in version 2.3.2. To work around this, use of rate-limiting quotas can limit an attacker's ability to exploit this: https://openbao.org/api-docs/system/rate-limit-quotas/.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00268 19th percentileScored 2026-11-07
Fix Fixed openbao (openbao): 2.3.2github.com/openbao/openbao (Go): 2.3.2, 0.0.0-20250807113757-8340a6918f6c

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
openbaoopenbaobefore 2.3.22.3.2Patch availableCNA
—github.com/openbao/openbao (Go)0.1.0 to before 2.3.22.3.2Patch availableGHSA-rxp7-9q75-vj3p
—github.com/openbao/openbao (Go)before 0.0.0-20250807113757-8340a6918f6c0.0.0-20250807113757-8340a6918f6cPatch availableGHSA-rxp7-9q75-vj3p
  • openbao Vendoropenbao Affected 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-rxp7-9q75-vj3p
  • github.com/openbao/openbao (Go) Vendor— Affected before 0.0.0-20250807113757-8340a6918f6c Fixed in 0.0.0-20250807113757-8340a6918f6c Patch available GHSA-rxp7-9q75-vj3p

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-rxp7-9q75-vj3p github.com/openbao/openbao (Go) Fixed in 2.3.2 Advisory →
  • Fix · GHSA-rxp7-9q75-vj3p github.com/openbao/openbao (Go) Fixed in 0.0.0-20250807113757-8340a6918f6c Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-55003
  2. 2026-10-03 Alias added: GHSA-rxp7-9q75-vj3p

References

Patch 1

Advisory 3

Other 2

  • 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