{"id":"CVE-2026-62379","aliases":["EUVD-2026-78354","GHSA-wg5r-wc3x-39vc","UBUNTU-CVE-2026-62379"],"status":"published","title":"OpenAM: Unauthenticated Remote Code Execution via Class.forName in AuthXMLUtils.createCustomCallback","description":"Open Access Management (OpenAM) is an access management solution. Prior to 16.1.2, the pre-authentication /authservice PLL endpoint accepts a CustomCallback XML element whose className value selects an arbitrary Java class for AuthXMLUtils to load and instantiate without verifying that it implements DSAMECallbackInterface. Default configurations expose the endpoint without authentication, allowing attacker-controlled class initialization and unsafe deserialization of a serialized Subject value to execute code in the server process. Enabling sunRemoteAuthSecurityEnabled does not prevent the vulnerable parsing and instantiation because its check occurs later. This issue is fixed in version 16.1.2.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01066,"percentile":0.6499,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-470","CWE-94"],"published":"2026-07-24T21:11:09Z","modified":"2026-11-09T12:49:55Z","fixes":[{"ecosystem":"Maven","package":"org.openidentityplatform.openam:openam-core","fixed_in":["16.1.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.openidentityplatform.openam:openam-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"16.1.1"},{"fixed":"16.1.2"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.openidentityplatform.openam:openam-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"16.1.2"}]}],"versions":["14.5.2","14.5.3","14.5.4","14.6.1","14.6.2","14.6.3","14.6.4","14.6.5","14.6.6","14.7.0","14.7.1","14.7.2","14.7.3","14.7.4","14.8.1","14.8.2","14.8.3","14.8.4","15.0.0","15.0.1","15.0.2","15.0.3","15.0.4","15.1.0","15.1.1","15.1.2","15.1.3","15.1.4","15.1.5","15.1.6","15.2.0","15.2.1","15.2.2","16.0.1","16.0.2","16.0.3","16.0.4","16.0.5","16.0.6","16.1.0","16.1.1"]}],"products":[{"vendor":"openidentityplatform","product":"openam"}],"references":[{"url":"https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-wg5r-wc3x-39vc","tags":["x_refsource_CONFIRM","advisory","web"]},{"url":"https://github.com/OpenIdentityPlatform/OpenAM/commit/edcf968cad91a78b932dba4ad559ef94cbf35f5a","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/OpenIdentityPlatform/OpenAM/releases/tag/16.1.2","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/advisories/GHSA-wg5r-wc3x-39vc"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62379.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62379","tags":["advisory"]},{"url":"https://github.com/OpenIdentityPlatform/OpenAM","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2026-62379","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-62379","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-62379","title":"OpenAM: Unauthenticated Remote Code Execution via Class.forName in AuthXMLUtils.createCustomCallback","description":"Open Access Management (OpenAM) is an access management solution. Prior to 16.1.2, the pre-authentication /authservice PLL endpoint accepts a CustomCallback XML element whose className value selects an arbitrary Java class for AuthXMLUtils to load and instantiate without verifying that it implements DSAMECallbackInterface. Default configurations expose the endpoint without authentication, allowing attacker-controlled class initialization and unsafe deserialization of a serialized Subject value to execute code in the server process. Enabling sunRemoteAuthSecurityEnabled does not prevent the vulnerable parsing and instantiation because its check occurs later. This issue is fixed in version 16.1.2.","status":"published","published":"2026-09-15T09:45:52.152Z","modified":"2026-09-15T14:21:34.543Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-94","CWE-470"],"updated_at":"2026-11-02T14:20:14.999906Z"}],"euvd":[{"id":"EUVD-2026-78354","description":"Open Access Management (OpenAM) is an access management solution. Prior to 16.1.2, the pre-authentication /authservice PLL endpoint accepts a CustomCallback XML element whose className value selects an arbitrary Java class for AuthXMLUtils to load and instantiate without verifying that it implements DSAMECallbackInterface. Default configurations expose the endpoint without authentication, allowing attacker-controlled class initialization and unsafe deserialization of a serialized Subject value to execute code in the server process. Enabling sunRemoteAuthSecurityEnabled does not prevent the vulnerable parsing and instantiation because its check occurs later. This issue is fixed in version 16.1.2.","status":"published","published":"2026-09-15T09:45:52Z","modified":"2026-09-15T14:21:34Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T17:28:18.105573Z"}],"ghsa":[{"id":"GHSA-wg5r-wc3x-39vc","title":"OpenAM: Unauthenticated Remote Code Execution via Class.forName in AuthXMLUtils.createCustomCallback","description":"## Summary\nA pre-authentication remote code execution vulnerability affects OpenAM. The\nremote authentication endpoint (`/authservice`, PLL) accepts an XML element\nthat names an arbitrary Java class, which the server then loads and\ninstantiates without validation. On a default configuration this is reachable\n**without authentication** and allows an attacker to run code on the server.\n\n## Impact\nUnauthenticated remote code execution / full server compromise on any OpenAM\ninstance with default settings.\n\n## Affected\nAll releases up to and including 16.1.1 (the defect predates the Open Identity\nPlatform fork).\n\n## Remediation\nUpgrade to `16.1.2`. The fix resolves the class named in a `\u003cCustomCallback\u003e`\nelement without running its static initialisers and rejects it unless it\nimplements `DSAMECallbackInterface`, and it constrains deserialisation of the\nserialised `Subject` value to a class allowlist.\n\n## Interim mitigation\nIf you cannot upgrade immediately:\n\n- **Restrict or block external network access to `/authservice`.** This is the\n  only reliable mitigation.\n- Optionally, **block PLL requests carrying a `\u003cCustomCallback className=\"...\"\u003e`\n  element** at the reverse proxy or WAF. That element is only produced for custom\n  `DSAMECallbackInterface` callbacks, so most deployments never send it — confirm\n  against your own traffic before enforcing.\n- **Enabling `sunRemoteAuthSecurityEnabled` does *not* mitigate this issue.** The\n  remote-auth security token is checked in `AuthXMLHandler.processAuthXMLRequest`,\n  which runs only after `AuthXMLRequest.parseXML` has already parsed the request\n  and instantiated the class named in the `\u003cCustomCallback className=\"...\"\u003e`\n  element. Do not rely on it as a substitute for upgrading or for network\n  restriction.\n\n## Credit\nVulnerability discovered by Zhixi \"Jace\" Sun of ASM/VI at TikTok.\nCorrection of the interim mitigation guidance contributed by @BarakSrour.","status":"published","published":"2026-07-24T21:11:09Z","modified":"2026-08-03T20:44:07Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-94","CWE-470"],"updated_at":"2026-11-02T14:40:55.903445Z"}],"nvd":[{"id":"CVE-2026-62379","description":"Open Access Management (OpenAM) is an access management solution. Prior to 16.1.2, the pre-authentication /authservice PLL endpoint accepts a CustomCallback XML element whose className value selects an arbitrary Java class for AuthXMLUtils to load and instantiate without verifying that it implements DSAMECallbackInterface. Default configurations expose the endpoint without authentication, allowing attacker-controlled class initialization and unsafe deserialization of a serialized Subject value to execute code in the server process. Enabling sunRemoteAuthSecurityEnabled does not prevent the vulnerable parsing and instantiation because its check occurs later. This issue is fixed in version 16.1.2.","status":"published","published":"2026-09-15T10:17:06.107Z","modified":"2026-09-25T14:23:59.847Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-94","CWE-470"],"updated_at":"2026-11-02T14:12:47.335523Z"}],"osv":[{"id":"CVE-2026-62379","title":"OpenAM: Unauthenticated Remote Code Execution via Class.forName in AuthXMLUtils.createCustomCallback","description":"Open Access Management (OpenAM) is an access management solution. Prior to 16.1.2, the pre-authentication /authservice PLL endpoint accepts a CustomCallback XML element whose className value selects an arbitrary Java class for AuthXMLUtils to load and instantiate without verifying that it implements DSAMECallbackInterface. Default configurations expose the endpoint without authentication, allowing attacker-controlled class initialization and unsafe deserialization of a serialized Subject value to execute code in the server process. Enabling sunRemoteAuthSecurityEnabled does not prevent the vulnerable parsing and instantiation because its check occurs later. This issue is fixed in version 16.1.2.","status":"published","published":"2026-09-15T09:45:52.152Z","modified":"2026-10-28T11:18:21.566550144Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-470","CWE-94"],"updated_at":"2026-11-02T15:45:13.306117Z"},{"id":"GHSA-wg5r-wc3x-39vc","title":"OpenAM: Unauthenticated Remote Code Execution via Class.forName in AuthXMLUtils.createCustomCallback","description":"## Summary\nA pre-authentication remote code execution vulnerability affects OpenAM. The\nremote authentication endpoint (`/authservice`, PLL) accepts an XML element\nthat names an arbitrary Java class, which the server then loads and\ninstantiates without validation. On a default configuration this is reachable\n**without authentication** and allows an attacker to run code on the server.\n\n## Impact\nUnauthenticated remote code execution / full server compromise on any OpenAM\ninstance with default settings.\n\n## Affected\nAll releases up to and including 16.1.1 (the defect predates the Open Identity\nPlatform fork).\n\n## Remediation\nUpgrade to `16.1.2`. The fix resolves the class named in a `\u003cCustomCallback\u003e`\nelement without running its static initialisers and rejects it unless it\nimplements `DSAMECallbackInterface`, and it constrains deserialisation of the\nserialised `Subject` value to a class allowlist.\n\n## Interim mitigation\nIf you cannot upgrade immediately:\n\n- **Restrict or block external network access to `/authservice`.** This is the\n  only reliable mitigation.\n- Optionally, **block PLL requests carrying a `\u003cCustomCallback className=\"...\"\u003e`\n  element** at the reverse proxy or WAF. That element is only produced for custom\n  `DSAMECallbackInterface` callbacks, so most deployments never send it — confirm\n  against your own traffic before enforcing.\n- **Enabling `sunRemoteAuthSecurityEnabled` does *not* mitigate this issue.** The\n  remote-auth security token is checked in `AuthXMLHandler.processAuthXMLRequest`,\n  which runs only after `AuthXMLRequest.parseXML` has already parsed the request\n  and instantiated the class named in the `\u003cCustomCallback className=\"...\"\u003e`\n  element. Do not rely on it as a substitute for upgrading or for network\n  restriction.\n\n## Credit\nVulnerability discovered by Zhixi \"Jace\" Sun of ASM/VI at TikTok.\nCorrection of the interim mitigation guidance contributed by @BarakSrour.","status":"published","published":"2026-07-24T21:11:09Z","modified":"2026-08-18T05:15:07.603071164Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-470","CWE-94"],"updated_at":"2026-11-02T15:46:58.767335Z"},{"id":"UBUNTU-CVE-2026-62379","description":"Open Access Management (OpenAM) is an access management solution. Prior to 16.1.2, the pre-authentication /authservice PLL endpoint accepts a CustomCallback XML element whose className value selects an arbitrary Java class for AuthXMLUtils to load and instantiate without verifying that it implements DSAMECallbackInterface. Default configurations expose the endpoint without authentication, allowing attacker-controlled class initialization and unsafe deserialization of a serialized Subject value to execute code in the server process. Enabling sunRemoteAuthSecurityEnabled does not prevent the vulnerable parsing and instantiation because its check occurs later. This issue is fixed in version 16.1.2.","status":"withdrawn","published":"2026-09-15T10:17:00Z","modified":"2026-11-09T12:49:55.464928472Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-09T13:27:33.428057Z"}]}}