CVE-2026-45051
Real vuln, vendor patched urgently, no PoC/KEV yet; chatter mixes confirmed flaw with unverified CVSS.
What: OpenAM <16.1.1 WebAuthnAuthentication module deserializes untrusted AuthenticatorImpl objects without validation, enabling RCE via classpath gadgets if attacker can write to userAttribute (CVE-2026-45051).
Why it matters: Published same-day with vendor patch (16.1.1); exploitability requires non-default preconditions (prior attribute write access + WebAuthn reachable), limiting widespread immediate risk but affecting access management deployments. Not yet KEV-listed; CVSS claims ~9.2 in chatter but unconfirmed in official metadata.
Where it's seen: Social posts cite CVSS 9.2 and RCE, recommend immediate upgrade to 16.1.1; no public PoC observed yet; vendor patch available; defender triage likely underway in OpenAM shops.
RISK: HIGH — Exploitable RCE in identity platform if preconditions met; patch available same-day; limited pre-exploitation signal.
Description
Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, WebAuthnAuthentication loads a serialized AuthenticatorImpl object graph from the configured userAttribute through loadAuthenticators without an ObjectInputFilter. Exploitation requires the WebAuthn flow to be reachable and an attacker to have previously written controlled data to that attribute through delegated administration, provisioning, directory access, legacy REST self-registration, or unsafe configuration. When those non-default conditions hold, the data is deserialized before assertion verification and can execute a classpath gadget in the application server process. This issue is fixed in version 16.1.1.