CVE-2026-63132
OpenBao's Recovery Mode Vulnerable To Token Leakage via Timing Attack
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
OpenBao's Recovery Mode Vulnerable To Token Leakage via Timing Attack
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.
- Record
CVE-2026-63132- CVSS 4.0
- 9.2 Critical
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-208
- Updated
- 2026-11-02
EUVDEUVD-2026-85520
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.
- Record
EUVD-2026-85520- CVSS 4.0
- 9.2 Critical
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-34fc-gh42-pj53
OpenBao's Recovery Mode Vulnerable To Token Leakage via Timing Attack
Impact
When running in the highly privileged recovery mode, OpenBao was vulnerable to a timing attack against the single recovery token. This allowed an attacker to extract the recovery token and use it to perform operations against the OpenBao instance, including reading or modification of data.
Patches
This has been patched in OpenBao v2.6.0.
- Record
GHSA-34fc-gh42-pj53- CVSS 4.0
- 9.1 Critical
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-208
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-63132- CVSS 4.0
- 9.2 Critical
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-208
- Updated
- 2026-11-02
OSV
OpenBao's Recovery Mode Vulnerable To Token Leakage via Timing Attack
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.
- Record
CVE-2026-63132- CVSS 4.0
- 9.2 Critical
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-208
- Updated
- 2026-11-02
OSVGHSA-34fc-gh42-pj53
OpenBao's Recovery Mode Vulnerable To Token Leakage via Timing Attack
Impact
When running in the highly privileged recovery mode, OpenBao was vulnerable to a timing attack against the single recovery token. This allowed an attacker to extract the recovery token and use it to perform operations against the OpenBao instance, including reading or modification of data.
Patches
This has been patched in OpenBao v2.6.0.
- Record
GHSA-34fc-gh42-pj53- CVSS 4.0
- 9.1 Critical
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-208
- Updated
- 2026-11-02
OSVBIT-openbao-2026-63132 No score
OpenBao's Recovery Mode Vulnerable To Token Leakage via Timing Attack
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.
- Record
BIT-openbao-2026-63132- Updated
- 2026-11-02
OSVGO-2026-6553 No score
OpenBao's Recovery Mode Vulnerable To Token Leakage via Timing Attack in github.com/openbao/openbao
OpenBao's Recovery Mode Vulnerable To Token Leakage via Timing Attack in github.com/openbao/openbao
- Record
GO-2026-6553- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/openbao/openbaoGo |
before 0.0.0-20260713141742-763625a20721 | 0.0.0-20260713141742-763625a20721 |
github.com/openbao/openbaoGo |
0.1.0 to 1.1.5 | None known |
openbaoBitnami |
before 2.6.0 | 2.6.0 |
github.com/openbao/openbaoGo |
before 0.0.0-20260713141742-763625a20721, 0.1.0 and later | 0.0.0-20260713141742-763625a20721 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-63132 is a critical vulnerability (CVSS 9.2) in Openbao, published September 22, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.63%, the 50th percentile. Fixed in github.com/openbao/openbao 0.0.0-20260713141742-763625a20721.
References
github.com/openbao/openbao/security/advisories/GHSA-34fc-gh42-pj53