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CVE-2025-54999

OpenBao: Timing Side-Channel in Userpass Auth Method

3.7 LowFix available

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/.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
None

Exploit likelihood

0.21%Up 0.2 points since Aug 9, 2025
90%50%10%1%

What each source reports

CVE List Score used 3.7

OpenBao: Timing Side-Channel in Userpass Auth Method

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/.

Record
CVE-2025-54999
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-203
Updated
2026-11-02
EUVDEUVD-2025-24035 3.7

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/.

Record
EUVD-2025-24035
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-hh28-h22f-8357 3.7

OpenBao has a Timing Side-Channel in the Userpass Auth Method

Impact

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.

Patches

OpenBao v2.3.2 will patch this issue.

Workarounds

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/

References

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

Barring further information, this is also assumed to cover and remediate the following additional vulnerability:

If this is not the case as further details emerge, a new CVE will be assigned for remediating that. Otherwise, no further CVE will be sought.

Record
GHSA-hh28-h22f-8357
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-203
Updated
2026-11-02
NVD 3.7

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/.

Record
CVE-2025-54999
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-203
Updated
2026-11-02
OSVALPINE-CVE-2025-54999 3.7

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/.

Record
ALPINE-CVE-2025-54999
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-03
OSV 3.7

OpenBao: Timing Side-Channel in Userpass Auth Method

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/.

Record
CVE-2025-54999
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-203
Updated
2026-11-02
Show 5 moreShow less
OSVGHSA-hh28-h22f-8357 3.7

OpenBao has a Timing Side-Channel in the Userpass Auth Method

Impact

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.

Patches

OpenBao v2.3.2 will patch this issue.

Workarounds

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/

References

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

Barring further information, this is also assumed to cover and remediate the following additional vulnerability:

If this is not the case as further details emerge, a new CVE will be assigned for remediating that. Otherwise, no further CVE will be sought.

Record
GHSA-hh28-h22f-8357
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-203
Updated
2026-11-02
OSVBIT-openbao-2025-54999 No score

OpenBao: Timing Side-Channel in Userpass Auth Method

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/.

Record
BIT-openbao-2025-54999
Updated
2026-11-02
OSVGO-2025-3854 No score

OpenBao has a Timing Side-Channel in the Userpass Auth Method in github.com/openbao/openbao

OpenBao has a Timing Side-Channel in the Userpass Auth Method 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-2025-3854
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
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 0.0.0-20250806193356-4d9b5d3d6486
0.0.0-20250806193356-4d9b5d3d6486
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 0.0.0-20250806193356-4d9b5d3d6486, 0.0.1 up to 2.3.2
0.0.0-20250806193356-4d9b5d3d64862.3.2
github.com/openbao/openbao
Go
 before 0.0.0-20250806193356-4d9b5d3d6486, 0.1.0 and later
0.0.0-20250806193356-4d9b5d3d6486
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

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-2025-54999 is a low vulnerability (CVSS 3.7) in Openbao, published August 8, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 11th percentile. Fixed in github.com/openbao/openbao 2.3.2.

References

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