CVE-2025-52893

OpenBao exists to provide a software solution to manage, store, and distribute sensitive data including secrets, certificates, and keys. OpenBao before v2.3.0 may leak sensitive information in logs when processing malformed data. This is separate from the earlier HCSEC-2025-09 / CVE-2025-4166. This issue has been fixed in OpenBao v2.3.0 and later. Like with HCSEC-2025-09, there is no known workaround except to ensure properly formatted requests from all clients.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
4.5 MEDIUM
NETWORK
LOW
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N
GitHub_MCNA
4.5 MEDIUM
NETWORK
LOW
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N
CISA-ADPADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 1%
VendorProductVersion
openbaoopenbao
𝑥
< 2.3.0
𝑥
= Vulnerable software versions
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
golang-github-go-viper-mapstructure
plucky
needs-triage
oracular
dne
noble
dne
jammy
dne
Common Weakness Enumeration
References
https://discuss.hashicorp.com/t/hcsec-2025-09-vault-may-expose-sensitive-information-in-error-logs-when-processing-malformed-data-with-the-kv-v2-plugin/74717
https://github.com/go-viper/mapstructure/commit/ed3f92181528ff776a0324107b8b55026e93766a
https://github.com/go-viper/mapstructure/pull/105
https://github.com/go-viper/mapstructure/releases/tag/v2.3.0
https://github.com/openbao/openbao/commit/cf5e920badbf96b41253534a3fd5ff5063bf4b30
https://github.com/openbao/openbao/security/advisories/GHSA-8f5r-8cmq-7fmq