by Kastro
Paper/Archive/CVE-2026-63132

CVE-2026-63132

openbao openbao — OpenBao's Recovery Mode Vulnerable To Token Leakage via Timing Attack

EPSS 0.6%CVSS 9.2
critical.is priorityof 100
38
CVSS 9.2 (CNA)9.2 / 10 × 3027.6Not in CISA KEV+300.0EPSS percentile 50.1.501 × 2010.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
openbao< 2.6.0–CNA

Scores by source

GitHub_M (CNA)9.2CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgithub.com/openbao/openbao/security/advisories/GHSA-34fc-gh42-pj53refgithub.com/openbao/openbao/pull/3388refgithub.com/openbao/openbao/pull/3472refgithub.com/openbao/openbao/commit/0f2d90c331f25d1c6cd108638da03f4c7bd949a8refgithub.com/openbao/openbao/commit/763625a2072103ea9e9122f2a8408e0b988d287arefgithub.com/hashicorp/vault/blob/main/CHANGELOG.md#203refgithub.com/openbao/openbao/releases/tag/v2.6.0