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[GHSA-wg5r-wc3x-39vc] OpenAM: Unauthenticated Remote Code Execution via Class.forName in AuthXMLUtils.createCustomCallback #8872

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[GHSA-wg5r-wc3x-39vc] OpenAM: Unauthenticated Remote Code Execution via Class.forName in AuthXMLUtils.createCustomCallback #8872

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4 changes: 2 additions & 2 deletions advisories/github-reviewed/2026/07/GHSA-wg5r-wc3x-39vc/GHSA-wg5r-wc3x-39vc.json
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{
"schema_version": "1.4.0",
"id": "GHSA-wg5r-wc3x-39vc",
"modified": "2026-07-24T21:11:09Z",
"modified": "2026-07-24T21:11:10Z",
"published": "2026-07-24T21:11:09Z",
"aliases": [
"CVE-2026-62379"
],
"summary": "OpenAM: Unauthenticated Remote Code Execution via Class.forName in AuthXMLUtils.createCustomCallback",
"details": "## 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`.\n\n## Interim mitigation\n- Require the remote-auth security token by enabling\n `sunRemoteAuthSecurityEnabled` (rejects unauthenticated `/authservice` calls).\n- Restrict or block external network access to `/authservice` until patched.\n\n## Credit\nVulnerability discovered by Zhixi \"Jace\" Sun of ASM/VI at TikTok.",
"details": "## 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`.\n\n## Interim mitigation\nUpgrade to `16.1.2`. If you cannot upgrade immediately:\n\n- **Restrict or block external network access to `/authservice`.** This is the only\n reliable mitigation.\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 and\n instantiated the class named in a `<CustomCallback className=\"...\">` element. Do not\n rely on it as a substitute for upgrading or for network restriction.\n\n## Credit\nVulnerability discovered by Zhixi \"Jace\" Sun of ASM/VI at TikTok.",
"severity": [
{
"type": "CVSS_V3",
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