CVE-2026-63132
A remote unauthenticated attacker able to make repeated recovery mode requests and measure response timing could infer the recovery token.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.63%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 4.0
- 9.2 CRITICALCVSS: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/M
- EPSS
- 0.63% probability · 50th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-208
- Source
- security-advisories@github.com
EPSS moved from 0.5% on 24 September 2026 to 0.6% on 26 October 2026.
References
- https://github.com/hashicorp/vault/blob/main/CHANGELOG.md#203
- https://github.com/openbao/openbao/commit/0f2d90c331f25d1c6cd108638da03f4c7bd949a8
- https://github.com/openbao/openbao/commit/763625a2072103ea9e9122f2a8408e0b988d287a
- https://github.com/openbao/openbao/pull/3388
- https://github.com/openbao/openbao/pull/3472
- https://github.com/openbao/openbao/releases/tag/v2.6.0
- https://github.com/openbao/openbao/security/advisories/GHSA-34fc-gh42-pj53
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.