{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-33757", "tracking": { "current_release_date": "2026-03-31T16:42:25.223395Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-33757", "initial_release_date": "2026-03-26T10:18:41.152932Z", "revision_history": [ { "date": "2026-03-26T10:18:41.152932Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Products created (1).| References created (4)." }, { "date": "2026-03-26T10:18:44.882780Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-26T19:01:06.083622Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (4).| CWES updated (1)." }, { "date": "2026-03-26T19:01:09.885318Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-27T00:12:47.830668Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (3).| CWES updated (1)." }, { "date": "2026-03-27T00:14:09.666529Z", "number": "6", "summary": "Source created.| CVE status created. (valid)| Description created for source.| References created (3)." }, { "date": "2026-03-27T19:43:24.172187Z", "number": "7", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (3).| CWES updated (1)." }, { "date": "2026-03-27T19:43:27.148896Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-03-27T19:44:43.810901Z", "number": "9", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)." }, { "date": "2026-03-27T19:44:46.251901Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-03-28T07:57:14.355288Z", "number": "11", "summary": "References created (1)." }, { "date": "2026-03-28T12:28:28.975693Z", "number": "12", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (2).| Product Identifiers created (1).| Product Remediations created (2).| References created (5).| CWES updated (1).| Vendor_assessment created." }, { "date": "2026-03-28T12:28:32.611131Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-03-29T00:38:53.017381Z", "number": "14", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-30T12:38:37.435319Z", "number": "15", "summary": "Unknown change." }, { "date": "2026-03-30T17:25:27.861038Z", "number": "16", "summary": "Products connected (1).| Product Identifiers created (1)." }, { "date": "2026-03-30T17:25:30.271431Z", "number": "17", "summary": "NCSC Score updated." }, { "date": "2026-03-31T11:06:31.421435Z", "number": "18", "summary": "Products connected (1).| Product Identifiers created (1).| References created (1)." }, { "date": "2026-03-31T11:06:33.778801Z", "number": "19", "summary": "NCSC Score updated." } ], "status": "interim", "version": "19" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/4", "product": { "name": "vers:rpm/4", "product_id": "CSAFPID-2552001", "product_identification_helper": { "cpe": "cpe:/a:redhat:cryostat:4" } } } ], "category": "product_name", "name": "Cryostat 4" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2552002" } } ], "category": "product_name", "name": "cryostat-storage-rhel9" } ], "category": "product_family", "name": "Cryostat 4" } ], "category": "vendor", "name": "Red Hat" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<2.5.2", "product": { "name": "vers:unknown/<2.5.2", "product_id": "CSAFPID-5916189" } } ], "category": "product_name", "name": "OpenBao" } ], "category": "vendor", "name": "Open Source" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-1317176", "product_identification_helper": { "cpe": "cpe:/o:suse:opensuse:-" } } } ], "category": "product_name", "name": "SUSE openSUSE" } ], "category": "vendor", "name": "SUSE" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<2.5.2", "product": { "name": "vers:unknown/<2.5.2", "product_id": "CSAFPID-5941596", "product_identification_helper": { "cpe": "cpe:2.3:a:openbao:openbao:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=0|<0.0.0-20260325142553-e32103951925", "product": { "name": "vers:unknown/>=0|<0.0.0-20260325142553-e32103951925", "product_id": "CSAFPID-5920119" } } ], "category": "product_name", "name": "openbao" } ], "category": "vendor", "name": "openbao" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-33757", "cwe": { "id": "CWE-384", "name": "Session Fixation" }, "notes": [ { "category": "description", "text": "### 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.", "title": "github - https://api.github.com/advisories/GHSA-7q7g-x6vg-xpc3" }, { "category": "description", "text": "### 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.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGHSA-7q7g-x6vg-xpc3.json?alt=media" }, { "category": "description", "text": "OpenBao lacks user confirmation for OIDC direct callback mode in github.com/openbao/openbao", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGO-2026-4860.json?alt=media" }, { "category": "description", "text": "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.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33757.json" }, { "category": "description", "text": "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.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33757" }, { "category": "description", "text": "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.\nTo 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.", "title": "redhat - https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-33757.json" }, { "category": "other", "text": "0.0006", "title": "EPSS" }, { "category": "other", "text": "5.3", "title": "NCSC Score" }, { "category": "other", "text": "There is product data available from source Certbundde, The value of the most recent CVSS (V3) score", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to (a version of) an uncommon product", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 3\n", "title": "Vendor assessment" } ], "product_status": { "known_affected": [ "CSAFPID-5916189", "CSAFPID-5920119", "CSAFPID-5941596", "CSAFPID-2552001", "CSAFPID-2552002", "CSAFPID-1317176" ] }, "references": [ { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0864.json" }, { "category": "external", "summary": "Source - github", "url": "https://api.github.com/advisories/GHSA-7q7g-x6vg-xpc3" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGHSA-7q7g-x6vg-xpc3.json?alt=media" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGO-2026-4860.json?alt=media" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33757.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33757" }, { "category": "external", "summary": "Source - redhat", "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-33757.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0864.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0864" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/openbao/openbao/security/advisories/GHSA-cpj3-3r2f-xj59" }, { "category": "external", "summary": "Reference - certbundde; cveprojectv5; github; nvd; osv; redhat", "url": "https://github.com/openbao/openbao/security/advisories/GHSA-7q7g-x6vg-xpc3" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv; redhat", "url": "https://github.com/openbao/openbao/commit/e32103951925723e9787e33886ab6b6ec20f4964" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv; redhat", "url": "https://datatracker.ietf.org/doc/html/rfc8628#section-5.4" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-7q7g-x6vg-xpc3" }, { "category": "external", "summary": "Reference - github; redhat", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33757" }, { "category": "external", "summary": "Reference - redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-33757" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/YG3L3Q24QZIZUO5BQJWWHF3VCOC2T5JE/" } ], "remediations": [ { "category": "mitigation", "details": "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.", "product_ids": [ "CSAFPID-2552001", "CSAFPID-2552002" ] } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L", "baseScore": 9.6, "baseSeverity": "CRITICAL" }, "products": [ "CSAFPID-1317176", "CSAFPID-2552001", "CSAFPID-2552002", "CSAFPID-5916189", "CSAFPID-5920119", "CSAFPID-5941596" ] } ], "title": "CVE-2026-33757" } ] }