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Fencer Vulns
medium 5.3

CVE-2025-54998 json

OpenBao Userpass and LDAP User Lockout Bypass

published 2025-08-08 15 mo ago modified 2026-09-08 2 mo ago also BIT-openbao-2025-54998 , EUVD-2025-24036 , GHSA-j3xv-7fxp-gfhx , GO-2025-3855

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 14%
public exploits
0
none known

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, attackers could bypass the automatic user lockout mechanisms in the OpenBao Userpass or LDAP auth systems. This was caused by different aliasing between pre-flight and full login request user entity alias attributions. This is fixed in version 2.3.2. To work around this issue, existing users may apply rate-limiting quotas on the authentication endpoints:, see https://openbao.org/api-docs/system/rate-limit-quotas/.

Patch / fix

  • go github.com/openbao/openbao 0.0.0-20250807212521-c52795c1ef74, 2.3.2
  • bitnami openbao 0.0.0-20250807212521-c52795c1ef74, 2.3.2
  • openbao openbao 0.0.0-20250807212521-c52795c1ef74, 2.3.2
  • govulncheck-vulndb SLE Module for Package Hub 15 SP6, openSUSE Leap 15.6 0.0.20250814T182633-150000.1.98.1

suse advisories SUSE-SU-2025:02912-1

  • govulncheck-vulndb openSUSE Tumbleweed 0.0.20250811T192933-1.1

opensuse advisories openSUSE-SU-2025:15434-1

  • openbao Alpine 3.24, Alpine 3.23, Alpine 3.22 2.3.2-r0

alpine advisories ALPINE-CVE-2025-54998

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
14 mo ago

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
GitHub 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
OSV 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
go github.com/openbao/openbao
>=0.1.0, <2.3.2
<0.0.0-20250807212521-c52795c1ef74
>=0.1.0
2.3.2
0.0.0-20250807212521-c52795c1ef74
bitnami openbao
<0.0.0-20250807212521-c52795c1ef74
>=0.0.1, <2.3.2
0.0.0-20250807212521-c52795c1ef74
2.3.2

Affected products

  • openbao openbao

Classification

Weakness
  • CWE-307 Improper Restriction of Excessive Authentication Attempts

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.