{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-33757", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-23T18:30:14.125Z", "datePublished": "2026-03-27T14:10:58.639Z", "dateUpdated": "2026-04-01T03:55:23.497Z"}, "containers": {"cna": {"title": "OpenBao lacks user confirmation for OIDC direct callback mode", "problemTypes": [{"descriptions": [{"cweId": "CWE-384", "lang": "en", "description": "CWE-384: Session Fixation", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 9.6, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/openbao/openbao/security/advisories/GHSA-7q7g-x6vg-xpc3", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/openbao/openbao/security/advisories/GHSA-7q7g-x6vg-xpc3"}, {"name": "https://github.com/openbao/openbao/commit/e32103951925723e9787e33886ab6b6ec20f4964", "tags": ["x_refsource_MISC"], "url": "https://github.com/openbao/openbao/commit/e32103951925723e9787e33886ab6b6ec20f4964"}, {"name": "https://datatracker.ietf.org/doc/html/rfc8628#section-5.4", "tags": ["x_refsource_MISC"], "url": "https://datatracker.ietf.org/doc/html/rfc8628#section-5.4"}], "affected": [{"vendor": "openbao", "product": "openbao", "versions": [{"version": "< 2.5.2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-27T14:10:58.639Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-7q7g-x6vg-xpc3", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-03-31T00:00:00+00:00", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-33757"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-01T03:55:23.497Z"}}]}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:openbao:openbao:*:*:*:*:*:*:*:*", "matchCriteriaId": "F1489D2B-6994-46B2-8550-256B9EFCFD48", "versionEndExcluding": "2.5.2", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-33757", "lastModified": "2026-03-30T17:23:24.993", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 9.6, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 8.3, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.5, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-03-27T15:16:57.690", "references": [{"source": "security-advisories@github.com", "tags": ["Technical Description"], "url": "https://datatracker.ietf.org/doc/html/rfc8628#section-5.4"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/openbao/openbao/commit/e32103951925723e9787e33886ab6b6ec20f4964"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/openbao/openbao/security/advisories/GHSA-7q7g-x6vg-xpc3"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-384"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{"bugzilla": {"description": "OpenBao: lack of user confirmation for OpenBao OIDC direct callback mode", "id": "2452269", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2452269"}, "csaw": false, "cvss3": {"cvss3_base_score": "9.6", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L", "status": "draft"}, "cwe": "CWE-384", "details": ["A flaw was found in OpenBao. A missing prompt for user confirmation when logging in via the JWT/OIDC authentication method with a role configured to use `callback_mode=direct` allows an attacker to initiate an authentication request and perform a \"remote phishing\" attack by tricking an authenticated user into visiting a crafted URL, automatically logging the user into the session of the attacker."], "mitigation": {"lang": "en:us", "value": "To mitigate this vulnerability, review JWT/OIDC authentication configurations and remove or disable any roles that have `callback_mode=direct`, or enforce a manual confirmation prompt for every session specifically for the Client ID used by OpenBao."}, "name": "CVE-2026-33757", "package_state": [{"cpe": "cpe:/a:redhat:cryostat:4", "fix_state": "Affected", "package_name": "cryostat/cryostat-storage-rhel9", "product_name": "Cryostat 4"}], "public_date": "2026-03-27T14:10:58Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-33757\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-33757\nhttps://datatracker.ietf.org/doc/html/rfc8628#section-5.4\nhttps://github.com/openbao/openbao/commit/e32103951925723e9787e33886ab6b6ec20f4964\nhttps://github.com/openbao/openbao/security/advisories/GHSA-7q7g-x6vg-xpc3"], "statement": "To exploit this vulnerability, an attacker needs to convince a user to visit a crafted URL, limiting the exposure of this flaw. Due to this reason, this issue has been rated with an important severity.", "threat_severity": "Important"}