{"schema_version":"1.7.5","id":"GHSA-7q7g-x6vg-xpc3","published":"2026-03-26T18:32:54Z","modified":"2026-07-27T09:11:40.296478509Z","aliases":["BIT-openbao-2026-33757","CVE-2026-33757","GO-2026-4860"],"summary":"OpenBao lacks user confirmation for OIDC direct callback mode","details":"### Impact\n\nOpenBao does not prompt for user confirmation when logging in via JWT/OIDC and a role with `callback_mode` set to `direct`.\n\nThis allows an attacker to start an authentication request and perform \"remote phishing\" by having the victim visit the URL and automatically log-in to the session of the attacker. Despite being based on the authorization code flow, the  `direct` mode calls back directly to the API and allows an attacker to poll for an OpenBao token until it is issued.\n\n### Patches\nVersion 2.5.2 includes an additional confirmation screen for `direct` type logins that requires manual user interaction in order to finish the authentication.\n\n### Workarounds\nThis issue can be worked around either by removing any roles with `callback_mode=direct` or enforcing confirmation for every session on the token issuer side for the Client ID used by OpenBao.","affected":[{"package":{"name":"github.com/openbao/openbao","ecosystem":"Go","purl":"pkg:golang/github.com/openbao/openbao"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.0.0-20260325142553-e32103951925"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-7q7g-x6vg-xpc3/GHSA-7q7g-x6vg-xpc3.json"}}],"references":[{"type":"WEB","url":"https://github.com/openbao/openbao/security/advisories/GHSA-7q7g-x6vg-xpc3"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33757"},{"type":"WEB","url":"https://github.com/openbao/openbao/commit/e32103951925723e9787e33886ab6b6ec20f4964"},{"type":"WEB","url":"https://datatracker.ietf.org/doc/html/rfc8628#section-5.4"},{"type":"PACKAGE","url":"https://github.com/openbao/openbao"}],"database_specific":{"cwe_ids":["CWE-384"],"github_reviewed":true,"github_reviewed_at":"2026-03-26T18:32:54Z","nvd_published_at":"2026-03-27T15:16:57Z","severity":"CRITICAL"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L"}]}