CVE-2025-52893: openbao — Fix

Description

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.

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CVSS v3.1 Score

4.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N

Weakness Type (CWE)

CWE-532 CWE-532

Affected Products

Vendor	Product	Versions
openbao	openbao	< 2.3.0

References

Advisories & Patches

https://github.com/openbao/openbao/commit/cf5e920badbf96b41253534a3fd5ff5063bf4b30 https://github.com/openbao/openbao/security/advisories/GHSA-8f5r-8cmq-7fmq

Other 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

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 4.5 (MEDIUM).

How severe is CVE-2025-52893? +

CVE-2025-52893 has a CVSS v3.1 score of 4.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-52893? +

CVE-2025-52893 affects products from openbao, specifically: openbao. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-52893? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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