CVE-2025-52893

low-risk
Published 2025-06-25

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.

Do I need to act?

-
0.02% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.5/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Openbao

References (6)

Not Applicable https://discuss.hashicorp.com/t/hcsec-2025-09-vault-may-expose-sensitive-informa...
Not Applicable https://github.com/go-viper/mapstructure/commit/ed3f92181528ff776a0324107b8b5502...
Not Applicable https://github.com/go-viper/mapstructure/pull/105
Not Applicable https://github.com/go-viper/mapstructure/releases/tag/v2.3.0
Patch https://github.com/openbao/openbao/commit/cf5e920badbf96b41253534a3fd5ff5063bf4b...
Vendor Advisory https://github.com/openbao/openbao/security/advisories/GHSA-8f5r-8cmq-7fmq
24
/ 100
low-risk
Severity 19/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal