CVE-2026-46358: OpenBao's Inline Auth Incorrectly Redacted Headers

Severity: medium (CVSS 5.4 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-07 · updated 2026-09-09
Weakness: CWE-532

Description

OpenBao is an open source identity-based secrets management system. Prior to version 2.5.4, OpenBao's inline auth functionality incorrectly redacted audit log entries, resulting in non-auth headers being removed and auth-related headers being retained in cleartext. This requires an attacker to compromise access to the audit device. Operators should review leaked source authentication material and rotate it as appropriate. This is fixed in OpenBao v2.5.4.

Affected products

openbao: before 2.5.4

References

https://github.com/openbao/openbao/commit/131c6966af4dfb4e1906703436eecdb8f2a3e9df
https://github.com/openbao/openbao/issues/3074
https://github.com/openbao/openbao/pull/3076
https://github.com/openbao/openbao/releases/tag/v2.5.4
https://github.com/openbao/openbao/security/advisories/GHSA-q8cj-789h-vg24
https://github.com/openbao/openbao/issues/3074

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