{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-33758", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-23T18:30:14.125Z", "datePublished": "2026-03-27T14:12:33.941Z", "dateUpdated": "2026-07-15T01:06:07.192Z" }, "containers": { "cna": { "title": "OpenBao has Reflected XSS in its OIDC authentication error message", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-20", "lang": "en", "description": "CWE-20: Improper Input Validation", "type": "CWE" } ] }, { "descriptions": [ { "cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE" } ] }, { "descriptions": [ { "cweId": "CWE-116", "lang": "en", "description": "CWE-116: Improper Encoding or Escaping of Output", "type": "CWE" } ] } ], "metrics": [ { "cvssV4_0": { "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "baseScore": 9.4, "baseSeverity": "CRITICAL", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H", "version": "4.0" } } ], "references": [ { "name": "https://github.com/openbao/openbao/security/advisories/GHSA-cpj3-3r2f-xj59", "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/openbao/openbao/security/advisories/GHSA-cpj3-3r2f-xj59" }, { "name": "https://github.com/openbao/openbao/pull/2709", "tags": [ "x_refsource_MISC" ], "url": "https://github.com/openbao/openbao/pull/2709" }, { "name": "https://github.com/openbao/openbao/commit/6e2b2dd84f0e47cebc90d6e79609dd5274732662", "tags": [ "x_refsource_MISC" ], "url": "https://github.com/openbao/openbao/commit/6e2b2dd84f0e47cebc90d6e79609dd5274732662" }, { "name": "https://github.com/openbao/openbao/releases/tag/v2.5.2", "tags": [ "x_refsource_MISC" ], "url": "https://github.com/openbao/openbao/releases/tag/v2.5.2" } ], "affected": [ { "vendor": "openbao", "product": "openbao", "versions": [ { "version": "< 2.5.2", "status": "affected" } ] } ], "providerMetadata": { "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-27T14:12:33.941Z" }, "descriptions": [ { "lang": "en", "value": "OpenBao is an open source identity-based secrets management system. Prior to version 2.5.2, OpenBao installations that have an OIDC/JWT authentication method enabled and a role with `callback_mode=direct` configured are vulnerable to XSS via the `error_description` parameter on the page for a failed authentication. This allows an attacker access to the token used in the Web UI by a victim. The `error_description` parameter has been replaced with a static error message in v2.5.2. The vulnerability can be mitigated by removing any roles with `callback_mode` set to `direct`." } ], "source": { "advisory": "GHSA-cpj3-3r2f-xj59", "discovery": "UNKNOWN" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-03-27T18:55:28.333530Z", "id": "CVE-2026-33758", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-27T19:58:18.047Z" } }, { "affected": [ { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:cryostat:4" ], "defaultStatus": "unaffected", "packageName": "cryostat/cryostat-storage-rhel9", "product": "Cryostat 4", "vendor": "Red Hat" } ], "datePublic": "2026-03-27T14:12:33.941Z", "descriptions": [ { "lang": "en", "value": "A flaw was found in OpenBao. Installations that have an OIDC/JWT authentication method enabled with a role configured to use `callback_mode=direct` are vulnerable to XSS via the `error_description` parameter on the page for a failed authentication. This allows an attacker to access the token used by an authenticated user in the Web UI." } ], "metrics": [ { "other": { "content": { "namespace": "https://access.redhat.com/security/updates/classification/", "value": "Important" }, "type": "Red Hat severity rating" } }, { "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" }, "format": "CVSS" } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-79", "description": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "lang": "en", "type": "CWE" } ] } ], "references": [ { "tags": [ "vdb-entry", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/security/cve/CVE-2026-33758" }, { "name": "RHBZ#2452294", "tags": [ "issue-tracking", "x_refsource_REDHAT" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2452294" }, { "tags": [ "x_sadp-csaf-vex" ], "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33758.json" } ], "timeline": [ { "lang": "en", "time": "2026-03-27T15:03:38.602Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-03-27T14:12:33.941Z", "value": "Made public." } ], "title": "OpenBao: reflected XSS in OpenBao OIDC authentication error message", "x_adpType": "supplier", "x_generator": { "engine": "sadp-cli 1.0.0" }, "providerMetadata": { "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "shortName": "redhat-SADP", "dateUpdated": "2026-07-15T01:06:07.192Z" } } ] } }