{"cve":"CVE-2026-33757","nvd":{"published":"2026-03-27T15:16:57.690","modified":"2026-07-15T02:20:15.163","status":"Modified","description":"OpenBao is an open source identity-based secrets management system. Prior to version 2.5.2, OpenBao does not prompt for user confirmation when logging in via JWT/OIDC and a role with `callback_mode` set to `direct`. This 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. Version 2.5.2 includes an additional confirmation screen for `direct` type logins that requires manual user interaction in order to finish the authentication. This 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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L","score":8.3},"cwes":["CWE-384"],"references":["https://datatracker.ietf.org/doc/html/rfc8628#section-5.4","https://github.com/openbao/openbao/commit/e32103951925723e9787e33886ab6b6ec20f4964","https://github.com/openbao/openbao/security/advisories/GHSA-7q7g-x6vg-xpc3","https://access.redhat.com/security/cve/CVE-2026-33757","https://bugzilla.redhat.com/show_bug.cgi?id=2452269"],"products":["openbao:openbao"],"source":"nvd","synced_at":"2026-10-19T22:28:18.033120106+00:00"},"epss":{"cve":"CVE-2026-33757","score":0.00418,"percentile":0.36158,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-7q7g-x6vg-xpc3","url":"https://osv.dev/vulnerability/GHSA-7q7g-x6vg-xpc3","summary":"OpenBao lacks user confirmation for OIDC direct callback mode","modified":"2026-07-27T09:11:40.296478509Z","packages":[{"ecosystem":"Go","name":"github.com/openbao/openbao","purl":"pkg:golang/github.com/openbao/openbao","ranges":["<0.0.0-20260325142553-e32103951925"],"fixed":["0.0.0-20260325142553-e32103951925"]}]},{"id":"GO-2026-4860","url":"https://osv.dev/vulnerability/GO-2026-4860","summary":"OpenBao lacks user confirmation for OIDC direct callback mode in github.com/openbao/openbao","modified":"2026-07-27T09:11:40.296478509Z","packages":[{"ecosystem":"Go","name":"github.com/openbao/openbao","purl":"pkg:golang/github.com/openbao/openbao","ranges":["<0.0.0-20260325142553-e32103951925"],"fixed":["0.0.0-20260325142553-e32103951925"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}