{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-87785", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-09-09T09:19:56.813Z", "datePublished": "2026-09-14T10:38:12.389Z", "dateUpdated": "2026-09-14T10:38:12.389Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-09-14T10:38:12.389Z"}, "title": "Apache Syncope: JWT subject spoofing", "problemTypes": [{"descriptions": [{"description": "CWE-290 Authentication bypass by spoofing", "lang": "en", "cweId": "CWE-290", "type": "CWE"}]}], "source": {"discovery": "UNKNOWN"}, "affected": [{"vendor": "Apache Software Foundation", "product": "Apache Syncope", "collectionURL": "https://repo.maven.apache.org/maven2", "packageName": "org.apache.syncope.core:syncope-core-spring", "packageURL": "pkg:maven/org.apache.syncope.core/syncope-core-spring", "versions": [{"status": "affected", "version": "3.0.0-M0", "lessThanOrEqual": "3.0.16", "versionType": "semver"}, {"status": "affected", "version": "4.0.0-M0", "lessThanOrEqual": "4.0.7", "versionType": "semver"}, {"status": "affected", "version": "4.1.0-M0", "lessThanOrEqual": "4.1.2", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"value": "Authentication bypass by spoofing vulnerability in Apache Syncope.\n\n\n\nWhen the configured JWKS settings for internal JWT authentication are disclosed (at least protocol and key), an attacker can spoof another user's privileges after completing a successful authentication and obtaining a valid JWT.\n\nThis issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 through 4.0.7, from 4.1.0-M0 through 4.1.2.\n\n\n\nUsers are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.", "lang": "en", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Authentication bypass by spoofing vulnerability in Apache Syncope.</p><p>When the configured JWKS settings for internal JWT authentication are disclosed (at least protocol and key), an attacker can spoof another user's privileges after completing a successful authentication and obtaining a valid JWT.<br><br>This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 through 4.0.7, from 4.1.0-M0 through 4.1.2.</p><p>Users are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.</p>"}]}], "references": [{"url": "https://lists.apache.org/thread/3t3om8mny7ng52q053pdzpmtdtosnqoo", "tags": ["vendor-advisory"]}], "metrics": [{"other": {"type": "Textual description of severity", "content": {"text": "low"}}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "credits": [{"lang": "en", "value": "Alon Galili", "type": "finder"}], "x_generator": {"engine": "Vulnogram 1.0.3"}}}}

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{"affected": [{"affectedData": [{"collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected", "packageName": "org.apache.syncope.core:syncope-core-spring", "packageURL": "pkg:maven/org.apache.syncope.core/syncope-core-spring", "product": "Apache Syncope", "vendor": "Apache Software Foundation", "versions": [{"lessThanOrEqual": "3.0.16", "status": "affected", "version": "3.0.0-M0", "versionType": "semver"}, {"lessThanOrEqual": "4.0.7", "status": "affected", "version": "4.0.0-M0", "versionType": "semver"}, {"lessThanOrEqual": "4.1.2", "status": "affected", "version": "4.1.0-M0", "versionType": "semver"}]}], "source": "security@apache.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Authentication bypass by spoofing vulnerability in Apache Syncope.\n\n\n\nWhen the configured JWKS settings for internal JWT authentication are disclosed (at least protocol and key), an attacker can spoof another user's privileges after completing a successful authentication and obtaining a valid JWT.\n\nThis issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 through 4.0.7, from 4.1.0-M0 through 4.1.2.\n\n\n\nUsers are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue."}], "id": "CVE-2026-87785", "lastModified": "2026-09-14T11:17:05.503", "metrics": {}, "published": "2026-09-14T11:17:05.503", "references": [{"source": "security@apache.org", "url": "https://lists.apache.org/thread/3t3om8mny7ng52q053pdzpmtdtosnqoo"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-290"}], "source": "security@apache.org", "type": "Primary"}]}

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