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Sensitive data leak in OpenBao audit log via malformed parameters

Priority LOW 10CWE-532Published · Updated

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

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00195 9th percentileScored 2026-11-07
Fix Fixed openbao (openbao): 2.6.3, 2.7.1

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

VendorProductAffected versionsFixed inStatusSource
openbaoopenbaobefore 2.6.32.6.3Patch availableCNA
openbaoopenbaobefore 2.6.3; 2.7.0 to before 2.7.12.6.3, 2.7.1Patch availableCNA
  • openbao Vendoropenbao Affected before 2.6.3 Fixed in 2.6.3 Patch available CNA
  • openbao Vendoropenbao Affected before 2.6.3; 2.7.0 to before 2.7.1 Fixed in 2.6.3, 2.7.1 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:openbao:openbao:*:*:*:*:*:*:*:*——openbao
  • cpe:2.3:a:openbao:openbao:*:*:*:*:*:*:*:* Versions — — ·openbao

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

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-22 Threatist record created from CVE-2026-115358
  2. 2026-10-22 Alias added: GHSA-h7rj-f8m2-hv6h
  3. 2026-10-29 CISA SSVC decision points changed
  4. 2026-11-03 Affected versions changed · Red Hat
  5. 2026-11-03 CVSS score added · Red Hat

References

  • 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
See all 48 →

Sources