{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-87802", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-09-09T10:11:18.664Z", "datePublished": "2026-09-14T10:22:29.574Z", "dateUpdated": "2026-09-14T10:22:29.574Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-09-14T10:22:29.574Z"}, "title": "Apache Syncope: SRA OAuth2 JWT signature verification bypass", "problemTypes": [{"descriptions": [{"description": "CWE-347 Improper verification of cryptographic signature", "lang": "en", "cweId": "CWE-347", "type": "CWE"}]}], "source": {"discovery": "UNKNOWN"}, "affected": [{"vendor": "Apache Software Foundation", "product": "Apache Syncope", "collectionURL": "https://repo.maven.apache.org/maven2", "packageName": "org.apache.syncope:syncope-sra", "packageURL": "pkg:maven/org.apache.syncope/syncope-sra", "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": "Improper verification of cryptographic signature vulnerability in Apache Syncope.\n\n\n\nWhen SRA is configured for OAuth 2.0 without JWKS set URI assigned, an attacker can forge arbitrary JWTs to impersonate any user identity and permissions, gaining full access to services proxied by SRA.\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>Improper verification of cryptographic signature vulnerability in Apache Syncope.</p><p>When SRA is configured for OAuth 2.0 without JWKS set URI assigned, an attacker can forge arbitrary JWTs to impersonate any user identity and permissions, gaining full access to services proxied by SRA.<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/gx83cootj00kn8hqd73x1bp8441np33d", "tags": ["vendor-advisory"]}], "metrics": [{"other": {"type": "Textual description of severity", "content": {"text": "low"}}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "credits": [{"lang": "en", "value": "MopMonk AI", "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:syncope-sra", "packageURL": "pkg:maven/org.apache.syncope/syncope-sra", "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": "Improper verification of cryptographic signature vulnerability in Apache Syncope.\n\n\n\nWhen SRA is configured for OAuth 2.0 without JWKS set URI assigned, an attacker can forge arbitrary JWTs to impersonate any user identity and permissions, gaining full access to services proxied by SRA.\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-2026-87802", "lastModified": "2026-09-14T11:17:05.620", "metrics": {}, "published": "2026-09-14T11:17:05.620", "references": [{"source": "security@apache.org", "url": "https://lists.apache.org/thread/gx83cootj00kn8hqd73x1bp8441np33d"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "security@apache.org", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[3.0.0-M0,3.0.16]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.0.0-M0,4.0.7]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.1.0-M0,4.1.2]"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Apache Syncope", "source": "cna", "vendor": "Apache Software Foundation"}, "product": "syncope", "vendor": "apache"}], "created": "2026-09-14T12:45:06.300292+00:00", "updated": "2026-09-14T12:45:06.300318+00:00", "vendors": ["apache", "apache$PRODUCT$syncope"]}