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GHSA-wg5r-wc3x-39vc

CriticalCVSS 9.8 / 10
Published Jul 24, 2026·Last modified Jul 24, 2026
Affected Components(0)

No affected components available

Description

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.

Interim mitigation

  • Require the remote-auth security token by enabling sunRemoteAuthSecurityEnabled (rejects unauthenticated /authservice calls).
  • Restrict or block external network access to /authservice until patched.

Credit

Vulnerability discovered by Zhixi "Jace" Sun of ASM/VI at TikTok.

Risk Scores
Base Score
9.8

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.

Threat Intelligence
9.0

Active exploitation in the wild has been confirmed. Immediate patching or mitigation is required.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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Critical severity
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