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CVE-2025-55003

OpenBao Login MFA Bypasses Rate Limiting and TOTP Token Reuse

5.7 MediumFix available

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/.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

0.27%Up 0.2 points since Aug 9, 2025
90%50%10%1%

What each source reports

CVE List Score used 5.7

OpenBao Login MFA Bypasses Rate Limiting and TOTP Token Reuse

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/.

Record
CVE-2025-55003
CVSS 3.1
5.7 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Weakness
CWE-307
Updated
2026-11-02
EUVDEUVD-2025-24032 5.7

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/.

Record
EUVD-2025-24032
CVSS 3.1
5.7 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-rxp7-9q75-vj3p 5.7

OpenBao Login MFA Bypass of Rate Limiting and TOTP Token Reuse

Impact

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.

Patches

OpenBao v2.3.2 will patch this issue.

Workarounds

Use of rate-limiting quotas can limit an attacker's ability to exploit this: https://openbao.org/api-docs/system/rate-limit-quotas/

References

This issue was disclosed to HashiCorp and is the OpenBao equivalent of the following tickets:

Record
GHSA-rxp7-9q75-vj3p
CVSS 3.1
5.7 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Weakness
CWE-307
Updated
2026-11-02
NVD 5.7

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/.

Record
CVE-2025-55003
CVSS 3.1
5.7 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Weakness
CWE-307
Updated
2026-11-02
OSVALPINE-CVE-2025-55003 5.7

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/.

Record
ALPINE-CVE-2025-55003
CVSS 3.1
5.7 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Updated
2026-11-03
OSV 5.7

OpenBao Login MFA Bypasses Rate Limiting and TOTP Token Reuse

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/.

Record
CVE-2025-55003
CVSS 3.1
5.7 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Weakness
CWE-307
Updated
2026-11-02
Show 6 moreShow less
OSVGHSA-rxp7-9q75-vj3p 5.7

OpenBao Login MFA Bypass of Rate Limiting and TOTP Token Reuse

Impact

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.

Patches

OpenBao v2.3.2 will patch this issue.

Workarounds

Use of rate-limiting quotas can limit an attacker's ability to exploit this: https://openbao.org/api-docs/system/rate-limit-quotas/

References

This issue was disclosed to HashiCorp and is the OpenBao equivalent of the following tickets:

Record
GHSA-rxp7-9q75-vj3p
CVSS 3.1
5.7 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Weakness
CWE-307
Updated
2026-11-02
OSVBIT-openbao-2025-55003 No score

OpenBao Login MFA Bypasses Rate Limiting and TOTP Token Reuse

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/.

Record
BIT-openbao-2025-55003
Updated
2026-11-02
OSVGO-2025-3856 No score

OpenBao Login MFA Bypass of Rate Limiting and TOTP Token Reuse in github.com/openbao/openbao

OpenBao Login MFA Bypass of Rate Limiting and TOTP Token Reuse in github.com/openbao/openbao.

NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions.

(If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.)

The additional affected modules and versions are: github.com/openbao/openbao before v2.3.2.

Record
GO-2025-3856
Updated
2026-11-02
OSVopenSUSE-SU-2025:15434-1 No score

govulncheck-vulndb-0.0.20250811T192933-1.1 on GA media

These are all security issues fixed in the govulncheck-vulndb-0.0.20250811T192933-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2025:15434-1
Updated
2026-11-02
OSVopenSUSE-SU-2025:15460-1 No score

openbao-2.3.2-1.1 on GA media

These are all security issues fixed in the openbao-2.3.2-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2025:15460-1
Updated
2026-11-02
OSVSUSE-SU-2025:02912-1 No score

Security update for govulncheck-vulndb

This update for govulncheck-vulndb fixes the following issues:

  • Update to version 0.0.20250814T182633 2025-08-14T18:26:33Z (jsc#PED-11136)

    Go CVE Numbering Authority IDs added or updated with aliases:

    • GO-2025-3765 CVE-2024-44906 GHSA-h4h6-vccr-44h2
    • GO-2025-3829 CVE-2025-54410 GHSA-4vq8-7jfc-9cvp

  • Update to version 0.0.20250811T192933 2025-08-11T19:29:33Z (jsc#PED-11136)

    Go CVE Numbering Authority IDs added or updated with aliases:

    • GO-2025-3822 CVE-2025-53942 GHSA-9g4j-v8w5-7x42
    • GO-2025-3829 CVE-2025-54410 GHSA-4vq8-7jfc-9cvp
    • GO-2025-3830 CVE-2025-54388 GHSA-x4rx-4gw3-53p4
    • GO-2025-3831 CVE-2025-50738 GHSA-hfcf-79gh-f3jc
    • GO-2025-3832 CVE-2021-21411 GHSA-652x-m2gr-hppm
    • GO-2025-3833 CVE-2025-54576 GHSA-7rh7-c77v-6434
    • GO-2025-3834 CVE-2025-54424 GHSA-8j63-96wh-wh3j
    • GO-2025-3835 CVE-2025-54386 GHSA-q6gg-9f92-r9wg
    • GO-2025-3836 CVE-2025-6037 GHSA-6c5r-4wfc-3mcx
    • GO-2025-3837 CVE-2025-5999 GHSA-6h4p-m86h-hhgh
    • GO-2025-3838 CVE-2025-6000 GHSA-mr4h-qf9j-f665
    • GO-2025-3839 CVE-2025-6011 GHSA-mwgr-84fv-3jh9
    • GO-2025-3840 CVE-2025-6004 GHSA-qgj7-fmq2-6cc4
    • GO-2025-3841 CVE-2025-6014 GHSA-qv3p-fmv3-9hww
    • GO-2025-3842 CVE-2025-6015 GHSA-v6r4-35f9-9rpw
    • GO-2025-3843 CVE-2025-8341 GHSA-3c93-92r7-j934
    • GO-2025-3844 CVE-2025-53534 GHSA-fm3m-jrgm-5ppg
    • GO-2025-3845 CVE-2025-54801 GHSA-qx2q-88mx-vhg7
    • GO-2025-3847 CVE-2025-54799 GHSA-q82r-2j7m-9rv4
    • GO-2025-3848 CVE-2025-6013 GHSA-7rx2-769v-hrwf
    • GO-2025-3851 CVE-2025-44779 GHSA-93jv-pvg8-hf3v
    • GO-2025-3852 CVE-2025-7195 GHSA-856v-8qm2-9wjv
    • GO-2025-3853 CVE-2025-55000 GHSA-f7c3-mhj2-9pvg
    • GO-2025-3854 CVE-2025-54999 GHSA-hh28-h22f-8357
    • GO-2025-3855 CVE-2025-54998 GHSA-j3xv-7fxp-gfhx
    • GO-2025-3856 CVE-2025-55003 GHSA-rxp7-9q75-vj3p
    • GO-2025-3857 CVE-2025-54996 GHSA-vf84-mxrq-crqc
    • GO-2025-3858 CVE-2025-54997 GHSA-xp75-r577-cvhp
    • GO-2025-3859 CVE-2025-55001 GHSA-2q8q-8fgw-9p6p

  • Update to version 0.0.20250807T150727 2025-08-07T15:07:27Z (jsc#PED-11136)

    Go CVE Numbering Authority IDs added or updated with aliases:

    • GO-2025-3849 CVE-2025-47907
Record
SUSE-SU-2025:02912-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
github.com/openbao/openbao
Go
 0.1.0 up to 2.3.2
2.3.2
github.com/openbao/openbao
Go
 before 0.0.0-20250807113757-8340a6918f6c
0.0.0-20250807113757-8340a6918f6c
openbao
Alpine:v3.22
 before 2.3.2-r0
2.3.2-r0
openbao
Alpine:v3.23
 before 2.3.2-r0
2.3.2-r0
openbao
Alpine:v3.24
 before 2.3.2-r0
2.3.2-r0
openbao
Bitnami
 before 0.0.0-20250807113757-8340a6918f6c, 0.0.1 up to 2.3.2
0.0.0-20250807113757-8340a6918f6c2.3.2
github.com/openbao/openbao
Go
 before 0.0.0-20250807113757-8340a6918f6c, 0.1.0 and later
0.0.0-20250807113757-8340a6918f6c
govulncheck-vulndb
SUSE:Linux Enterprise Module for Package Hub 15 SP6
 before 0.0.20250814T182633-150000.1.98.1
0.0.20250814T182633-150000.1.98.1
govulncheck-vulndb
openSUSE:Leap 15.6
 before 0.0.20250814T182633-150000.1.98.1
0.0.20250814T182633-150000.1.98.1
govulncheck-vulndb
openSUSE:Tumbleweed
 before 0.0.20250811T192933-1.1
0.0.20250811T192933-1.1
openbao
openSUSE:Tumbleweed
 before 2.3.2-1.1
2.3.2-1.1

History

History
RecordedChangedSources
affected, aliases, referencesOSV
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-55003 is a medium vulnerability (CVSS 5.7) in Openbao, published August 8, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 19th percentile. Fixed in github.com/openbao/openbao 2.3.2.

References

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