CVE-2026-62379 OpenAM: Unauthenticated Remote Code Execution via Class.forName in AuthXMLUtils.createCustomCallback
Unauthenticated attackers can execute arbitrary code on OpenAM servers by exploiting unsafe class loading in the authentication service endpoint.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-62379?
CVE-2026-62379 is a critical code injection vulnerability in OpenIdentityPlatform OpenAM, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-62379?
2 open source packages ship an affected version, including org.openidentityplatform.openam:openam-core.
| Package | Affected | Fixed in |
|---|---|---|
org.openidentityplatform.openam:openam-core Maven | All versions | 16.1.2 |
org.openidentityplatform.openam:openam-core Maven | All versions | 16.1.2 |
How do I fix CVE-2026-62379?
Upgrade org.openidentityplatform.openam:openam-core to 16.1.2 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-62379 being exploited?
There is no known exploitation of CVE-2026-62379 in the wild and no public exploit code.
Sources
Also known as GHSA-wg5r-wc3x-39vc, UBUNTU-CVE-2026-62379.