What’s Vulnerable › Vulnerabilities

CVE-2025-62705: OpenBao and Vault Leak []byte Fields in Audit Logs

• Severity: medium (CVSS 4.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-10-22 · updated 2026-10-19
• Weakness: CWE-532

Description

OpenBao is an open source identity-based secrets management system. Prior to version 2.4.2, OpenBao's audit log did not appropriately redact fields when relevant subsystems sent []byte response parameters rather than strings. This includes, but is not limited to sys/raw with use of encoding=base64, all data would be emitted unredacted to the audit log, and Transit, when performing a signing operation with a derived Ed25519 key, would emit public keys to the audit log. This issue has been patched in OpenBao 2.4.2.

Affected products

• openbao: before 2.4.2 — fixed in 2.4.2

How to fix

Upgrade to a fixed version: openbao 2.4.2. Check the vendor advisory for mitigations.

References

• https://github.com/openbao/openbao/commit/cc2c476bac66e1d94776c2629793daec3af625f8
• https://github.com/openbao/openbao/security/advisories/GHSA-rc54-2g2c-g36g

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