Sensitive data leak in OpenBao audit log via malformed parameters
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-532.
Summary
OpenBao before 2.6.3, and from 2.7.0 before 2.7.1, leaks sensitive input into audit logs. Malformed TypeKVPair or TypeHeader plugin parameter values cause error messages containing the sensitive input to be recorded in the audit log (CWE-532). A remote attacker with high privileges can submit such requests to leak sensitive data.
Written with Claude Haiku 5.5 from the sources below · 2026-11-03
Description from the CNA
OpenBao before 2.6.3 contains an information disclosure vulnerability that allows attackers to leak sensitive data into audit logs by sending malformed plugin parameters. Attackers can submit requests with malformed TypeKVPair or TypeHeader field values, causing error messages containing sensitive input to be recorded in audit logs.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Update OpenBao to 2.6.3 or 2.7.1, matching the release line you run.
Written with Claude Haiku 5.5 from the sources below · 2026-11-03
- Fix · CNA openbao (openbao) Fixed in 2.6.3
- Fix · CNA openbao (openbao) Fixed in 2.6.3, 2.7.1
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
openbao 2.6.3
6 records Highest priority Priority LOW 6 LOW
Other records, highest priority first
- TI-2026-79452 Incorrect authorization in OpenBao policy cache allows cross-namespace accessPriority LOW 35
- TI-2026-79447 Open redirect in OpenBao OIDC identity provider UIPriority LOW 30
- TI-2026-79451 Missing authorization in OpenBao lets attackers stop Agent and ProxyPriority LOW 11
Vendor assessments
Timeline
- 2026-10-22 Threatist record created from CVE-2026-115358
- 2026-10-22 Alias added: GHSA-h7rj-f8m2-hv6h
- 2026-10-29 CISA SSVC decision points changed
- 2026-11-03 Affected versions changed · Red Hat
- 2026-11-03 CVSS score added · Red Hat
References
More openbao vulnerabilities
- TI-2024-01904 Vault Cert Auth Method Did Not Correctly Validate Non-CA Certificates CVSS 3.1CRITICAL 9.8
- TI-2026-34075 OpenBao's Inline Auth Incorrectly Redacted Headers CVSS 4.0MEDIUM 5.4
- TI-2026-40259 OpenBao: LDAPi ldaputil (wrong escape func) CVSS 3.1MEDIUM 6.8
- TI-2026-40265 OpenBao: Transit secrets engine crashes on key creation with `derived: true` for asymmetric key types CVSS 3.1MEDIUM 6.5
- TI-2026-28381 OpenBao has Decompression Bomb via Unbounded Copy in OCI Plugin Extraction (DoS) CVSS 3.1MEDIUM 6.5
- TI-2026-45068 OpenBao's Recovery Mode Vulnerable To Token Leakage via Timing Attack CVSS 4.0CRITICAL 9.2
Sources
- CVE-2026-115358 · CVE Program
- CVE-2026-115358 · NVD
- FIRST EPSS
- GHSA-h7rj-f8m2-hv6h · GitHub Advisory Database · CC BY 4.0
- CVE-2026-115358 · Red Hat security data · CC BY 4.0
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