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.

The following products are affected by CVE-2025-52893 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-52893.

URL	Resource
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