OpenBao's Recovery Mode Vulnerable To Token Leakage via Timing Attack
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Attack requirements
- Present
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 2 without a fix
Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-208.
Summary
OpenBao is an open source identity-based secrets management system. Prior to 2.6.0, OpenBao's handleLogicalRecovery path in http/logical.go compared the highly privileged recovery token with ordinary string equality. A remote unauthenticated attacker able to make repeated recovery mode requests and measure response timing could infer the recovery token. The recovered token could then authorize recovery mode operations that read or modify OpenBao data. This issue is fixed in version 2.6.0.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| openbao | openbao | before 2.6.0 | 2.6.0 | Patch available | CNA |
| — | github.com/openbao/openbao (Go) | before 0.0.0-20260713141742-763625a20721 | 0.0.0-20260713141742-763625a20721 | Patch available | GHSA-34fc-gh42-pj53 |
| — | github.com/openbao/openbao (Go) | 0.1.0 – 1.1.5 | — | No fix listed | GHSA-34fc-gh42-pj53 |
- openbao Vendoropenbao Affected before 2.6.0 Fixed in 2.6.0 Patch available CNA
- github.com/openbao/openbao (Go) Vendor— Affected before 0.0.0-20260713141742-763625a20721 Fixed in 0.0.0-20260713141742-763625a20721 Patch available GHSA-34fc-gh42-pj53
- github.com/openbao/openbao (Go) Vendor— Affected 0.1.0 – 1.1.5 Fixed in — No fix listed GHSA-34fc-gh42-pj53
Remediation
- Fix · CNA openbao (openbao) Fixed in 2.6.0
- Fix · GHSA-34fc-gh42-pj53 github.com/openbao/openbao (Go) Fixed in 0.0.0-20260713141742-763625a20721 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Hardened Images | Affected | No fix planned: Will not fix |
| Red Hat OpenShift GitOps | Affected | No fix yet |
Not affected: 2 products
- Cryostat 4
- Red Hat Hardened Images
Timeline
- 2026-10-02 Threatist record created from CVE-2026-63132
- 2026-10-03 Alias added: GHSA-34fc-gh42-pj53
- 2026-10-29 EPSS moved to the 50th–90th percentile
References
Other 8
- https://github.com/openbao/openbao/security/advisories/GHSA-34fc-gh42-pj53
- https://github.com/openbao/openbao/pull/3388
- https://github.com/openbao/openbao/pull/3472
- https://github.com/openbao/openbao/commit/0f2d90c331f25d1c6cd108638da03f4c7bd949a8
- https://github.com/openbao/openbao/commit/763625a2072103ea9e9122f2a8408e0b988d287a
- https://github.com/hashicorp/vault/blob/main/CHANGELOG.md#203
- https://github.com/openbao/openbao/releases/tag/v2.6.0
- https://github.com/openbao/openbao
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-2026-26136 OpenBao lacks user confirmation for OIDC direct callback mode CVSS 3.1CRITICAL 9.6
Sources
- CVE-2026-63132 · CVE Program
- CVE-2026-63132 · NVD
- FIRST EPSS
- GHSA-34fc-gh42-pj53 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-63132 · Red Hat security data · CC BY 4.0
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