OpenBao and Vault Leak []byte Fields in Audit Logs

CVE-2025-62705 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

Impact

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.
  • Transit, when performing a signing operation with a derived Ed25519 key, would emit public keys to the audit log.

Third-party plugins may be affected.

This issue has been present since HashiCorp Vault and continues to impact Vault as of v1.20.4.

Patches

OpenBao v2.4.2 will patch this issue.

Workarounds

If users do not use the above functionality, they are not impacted. To prohibit the use of sys/raw globally, ensure raw_storage_endpoint=false is set or missing from the server configuration.

Basic information

Type
reviewed
Severity
medium
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2025-10-22 19:55:40 UTC
Updated
2025-10-23 17:40:58 UTC
GitHub reviewed
2025-10-22 19:55:40 UTC
NVD published
2025-10-22

EPSS Score

Score Percentile
0.04% 13.35%

CVSS Scores

Base score Version Severity Vector
5.7 4.0 —
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network.
Attack complexity (AC:L)
Exploitation conditions are straightforward and stable.
Attack requirements (AT:P)
Additional preconditions must be present for exploitation.
Privileges required (PR:H)
High privileges are required.
User interaction (UI:P)
A user has to participate (for example click/open/approve).
Vulnerable system confidentiality impact (VC:H)
High confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:N)
No integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:N)
No availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:N)
No confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:N)
No integrity impact on subsequent systems.
Subsequent system availability impact (SA:N)
No availability impact on subsequent systems.

Identifiers

Type Value
GHSA GHSA-rc54-2g2c-g36g ↗
CVE CVE-2025-62705 ↗

CWEs

CWE id Name
CWE-532 Insertion of Sensitive Information into Log File

Credits

  • phil9909 (finder)
  • satoqz (finder)

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
go github.com/openbao/openbao < 0.0.0-20251022165510-cc2c476bac66 0.0.0-20251022165510-cc2c476bac66 —

References

cvelogic Threat Intelligence