PT-2026-64449 · Maven · Org.Openidentityplatform.Openam:Openam-Core
CVE-2026-62379
·
Published
2026-07-24
·
Updated
2026-07-24
CVSS v3.1
9.8
Critical
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Summary
A pre-authentication remote code execution vulnerability affects OpenAM. The
remote authentication endpoint (
/authservice, PLL) accepts an XML element
that names an arbitrary Java class, which the server then loads and
instantiates without validation. On a default configuration this is reachable
without authentication and allows an attacker to run code on the server.Impact
Unauthenticated remote code execution / full server compromise on any OpenAM
instance with default settings.
Affected
All releases up to and including 16.1.1 (the defect predates the Open Identity
Platform fork).
Remediation
Upgrade to
16.1.2. The fix resolves the class named in a <CustomCallback>
element without running its static initialisers and rejects it unless it
implements DSAMECallbackInterface, and it constrains deserialisation of the
serialised Subject value to a class allowlist.Interim mitigation
If you cannot upgrade immediately:
- Restrict or block external network access to
/authservice. This is the only reliable mitigation. - Optionally, block PLL requests carrying a
<CustomCallback className="...">element at the reverse proxy or WAF. That element is only produced for customDSAMECallbackInterfacecallbacks, so most deployments never send it — confirm against your own traffic before enforcing. - Enabling
sunRemoteAuthSecurityEnableddoes not mitigate this issue. The remote-auth security token is checked inAuthXMLHandler.processAuthXMLRequest, which runs only afterAuthXMLRequest.parseXMLhas already parsed the request and instantiated the class named in the<CustomCallback className="...">element. Do not rely on it as a substitute for upgrading or for network restriction.
Credit
Vulnerability discovered by Zhixi "Jace" Sun of ASM/VI at TikTok.
Correction of the interim mitigation guidance contributed by @BarakSrour.
Fix
Code Injection
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Related Identifiers
Affected Products
Org.Openidentityplatform.Openam:Openam-Core