Vulnerability Instance
Lookup for vulnerabilities affecting packages.
GET /api/vulnerabilities/23131?format=api
{ "url": "http://public2.vulnerablecode.io/api/vulnerabilities/23131?format=api", "vulnerability_id": "VCID-a5d9-k9vd-fyfe", "summary": "Keycloak's identity-first login flow exposes user information\nA flaw was found in Keycloak. A remote attacker can exploit differential error messages during the identity-first login flow when Organizations are enabled. This vulnerability allows an attacker to determine the existence of users, leading to information disclosure through user enumeration.", "aliases": [ { "alias": "CVE-2026-4633" }, { "alias": "GHSA-rhgq-f8x5-j2jc" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/1066759?format=api", "purl": "pkg:maven/org.keycloak/keycloak-services@26.6.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-mdkf-3bgs-w7dm" }, { "vulnerability": "VCID-ugtk-3bjv-s3a4" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.keycloak/keycloak-services@26.6.0" } ], "affected_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/857757?format=api", "purl": "pkg:maven/org.keycloak/keycloak-services@26.4.7", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-5vwq-aqk5-nkh9" }, { "vulnerability": "VCID-6n3p-8y8x-bbfc" }, { "vulnerability": "VCID-7c1j-kcbb-v3f1" }, { "vulnerability": "VCID-a5d9-k9vd-fyfe" }, { "vulnerability": "VCID-auwb-hcuv-gygf" }, { "vulnerability": "VCID-c11x-8jte-fuds" }, { "vulnerability": "VCID-cf37-8d6y-r3d5" }, { "vulnerability": "VCID-gn2j-ra6w-r3et" }, { "vulnerability": "VCID-gzz6-md9v-b3em" }, { "vulnerability": "VCID-k4xv-x1pt-guce" }, { "vulnerability": "VCID-m3uj-4mag-kbf2" }, { "vulnerability": "VCID-mdkf-3bgs-w7dm" }, { "vulnerability": "VCID-qgbq-s33g-d7af" }, { "vulnerability": "VCID-szbr-v2vq-3kbn" }, { "vulnerability": "VCID-tc9b-zzjt-63c7" }, { "vulnerability": "VCID-ugtk-3bjv-s3a4" }, { "vulnerability": "VCID-v77w-st1u-pfe6" }, { "vulnerability": "VCID-xd7x-aevv-cfcp" }, { "vulnerability": "VCID-xfnw-15sz-zyfr" }, { "vulnerability": "VCID-y1h3-yyn9-53fr" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.keycloak/keycloak-services@26.4.7" }, { "url": "http://public2.vulnerablecode.io/api/packages/66886?format=api", "purl": "pkg:maven/org.keycloak/keycloak-services@26.5.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-5vwq-aqk5-nkh9" }, { "vulnerability": "VCID-6n3p-8y8x-bbfc" }, { "vulnerability": "VCID-7c1j-kcbb-v3f1" }, { "vulnerability": "VCID-8vzz-naas-a7ab" }, { "vulnerability": "VCID-a5d9-k9vd-fyfe" }, { "vulnerability": "VCID-auwb-hcuv-gygf" }, { "vulnerability": "VCID-baux-3v7g-tucw" }, { "vulnerability": "VCID-c11x-8jte-fuds" }, { "vulnerability": "VCID-cf37-8d6y-r3d5" }, { "vulnerability": "VCID-gn2j-ra6w-r3et" }, { "vulnerability": "VCID-gzz6-md9v-b3em" }, { "vulnerability": "VCID-j5bq-q689-qbg3" }, { "vulnerability": "VCID-jsvn-26y8-q3ey" }, { "vulnerability": "VCID-k4xv-x1pt-guce" }, { "vulnerability": "VCID-khfk-1gas-vfan" }, { "vulnerability": "VCID-m3uj-4mag-kbf2" }, { "vulnerability": "VCID-mdkf-3bgs-w7dm" }, { "vulnerability": "VCID-qgbq-s33g-d7af" }, { "vulnerability": "VCID-szbr-v2vq-3kbn" }, { "vulnerability": "VCID-tc9b-zzjt-63c7" }, { "vulnerability": "VCID-ugtk-3bjv-s3a4" }, { "vulnerability": "VCID-v77w-st1u-pfe6" }, { "vulnerability": "VCID-xd7x-aevv-cfcp" }, { "vulnerability": "VCID-y1h3-yyn9-53fr" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.keycloak/keycloak-services@26.5.0" }, { "url": "http://public2.vulnerablecode.io/api/packages/68053?format=api", "purl": "pkg:maven/org.keycloak/keycloak-services@26.5.6", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-6n3p-8y8x-bbfc" }, { "vulnerability": "VCID-a5d9-k9vd-fyfe" }, { "vulnerability": "VCID-auwb-hcuv-gygf" }, { "vulnerability": "VCID-c11x-8jte-fuds" }, { "vulnerability": "VCID-cf37-8d6y-r3d5" }, { "vulnerability": "VCID-gn2j-ra6w-r3et" }, { "vulnerability": "VCID-k4xv-x1pt-guce" }, { "vulnerability": "VCID-mdkf-3bgs-w7dm" }, { "vulnerability": "VCID-qgbq-s33g-d7af" }, { "vulnerability": "VCID-ugtk-3bjv-s3a4" }, { "vulnerability": "VCID-y1h3-yyn9-53fr" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.keycloak/keycloak-services@26.5.6" } ], "references": [ { "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-4633.json", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.7", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N" } ], "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-4633.json" }, { "reference_url": "https://access.redhat.com/security/cve/CVE-2026-4633", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.7", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N" }, { "value": "LOW", "scoring_system": "generic_textual", "scoring_elements": "" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-23T15:07:15Z/" } ], "url": "https://access.redhat.com/security/cve/CVE-2026-4633" }, { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2026-4633", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00038", "scoring_system": "epss", "scoring_elements": "0.11378", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.00038", "scoring_system": "epss", "scoring_elements": "0.11318", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.00038", "scoring_system": "epss", "scoring_elements": "0.11372", "published_at": "2026-04-09T12:55:00Z" }, { "value": "0.00038", "scoring_system": "epss", "scoring_elements": "0.11344", "published_at": "2026-04-12T12:55:00Z" }, { "value": "0.00038", "scoring_system": "epss", "scoring_elements": "0.11308", "published_at": "2026-04-21T12:55:00Z" }, { "value": "0.00038", "scoring_system": "epss", "scoring_elements": "0.11179", "published_at": "2026-04-18T12:55:00Z" }, { "value": "0.00038", "scoring_system": "epss", "scoring_elements": "0.11177", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.00038", "scoring_system": "epss", "scoring_elements": "0.11389", "published_at": "2026-04-02T12:55:00Z" }, { "value": "0.00038", "scoring_system": "epss", "scoring_elements": "0.11315", "published_at": "2026-04-13T12:55:00Z" }, { "value": "0.00038", "scoring_system": "epss", "scoring_elements": "0.11446", "published_at": "2026-04-04T12:55:00Z" }, { "value": "0.00038", "scoring_system": "epss", "scoring_elements": "0.11237", "published_at": "2026-04-07T12:55:00Z" }, { "value": "0.00041", "scoring_system": "epss", "scoring_elements": "0.12472", "published_at": "2026-04-24T12:55:00Z" }, { "value": "0.00041", "scoring_system": "epss", "scoring_elements": "0.1244", "published_at": "2026-04-26T12:55:00Z" }, { "value": "0.00041", "scoring_system": "epss", "scoring_elements": "0.12329", "published_at": "2026-04-29T12:55:00Z" }, { "value": "0.00056", "scoring_system": "epss", "scoring_elements": "0.17417", "published_at": "2026-05-14T12:55:00Z" }, { "value": "0.00056", "scoring_system": "epss", "scoring_elements": "0.17143", "published_at": "2026-05-05T12:55:00Z" }, { "value": "0.00056", "scoring_system": "epss", "scoring_elements": "0.17231", "published_at": "2026-05-07T12:55:00Z" }, { "value": "0.00056", "scoring_system": "epss", "scoring_elements": "0.17326", "published_at": "2026-05-09T12:55:00Z" }, { "value": "0.00056", "scoring_system": "epss", "scoring_elements": "0.17296", "published_at": "2026-05-11T12:55:00Z" }, { "value": "0.00056", "scoring_system": "epss", "scoring_elements": "0.17335", "published_at": "2026-05-12T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-4633" }, { "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=2450247", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.7", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N" }, { "value": "LOW", "scoring_system": "generic_textual", "scoring_elements": "" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-23T15:07:15Z/" } ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2450247" }, { "reference_url": "https://github.com/keycloak/keycloak", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.7", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N" }, { "value": "LOW", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/keycloak/keycloak" }, { "reference_url": "https://github.com/keycloak/keycloak/commit/b137016cc6dcfd9f59b2aa2e6d73af8b0ebf7c6e", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.7", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N" }, { "value": "LOW", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/keycloak/keycloak/commit/b137016cc6dcfd9f59b2aa2e6d73af8b0ebf7c6e" }, { "reference_url": "https://github.com/keycloak/keycloak/commit/b4558a874fa79341404ae4d2d8f240f22bfed340", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.7", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N" }, { "value": "LOW", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/keycloak/keycloak/commit/b4558a874fa79341404ae4d2d8f240f22bfed340" }, { "reference_url": "https://github.com/keycloak/keycloak/issues/47619", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.7", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N" }, { "value": "LOW", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/keycloak/keycloak/issues/47619" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4633", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.7", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N" }, { "value": "LOW", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4633" }, { "reference_url": "https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/a:redhat:build_keycloak:", "reference_id": "cpe:/a:redhat:build_keycloak:", "reference_type": "", "scores": [], "url": "https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/a:redhat:build_keycloak:" }, { "reference_url": "https://github.com/advisories/GHSA-rhgq-f8x5-j2jc", "reference_id": "GHSA-rhgq-f8x5-j2jc", "reference_type": "", "scores": [ { "value": "LOW", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-rhgq-f8x5-j2jc" } ], "weaknesses": [ { "cwe_id": 209, "name": "Generation of Error Message Containing Sensitive Information", "description": "The product generates an error message that includes sensitive information about its environment, users, or associated data." }, { "cwe_id": 937, "name": "OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities", "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2013." }, { "cwe_id": 1035, "name": "OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities", "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2017." } ], "exploits": [], "severity_range_score": "0.1 - 3.7", "exploitability": "0.5", "weighted_severity": "3.3", "risk_score": 1.6, "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-a5d9-k9vd-fyfe" }