CVE-2026-123543 · Other
NO FIX YET · SEE WHAT TO DO
OpenAM before 16.1.4 accepts serialized Java data without size or structure limits. An unauthenticated attacker can send small crafted requests to exhaust server resources and block login, session validation and policy decisions.
first public Oct 22, 2026 · 1 source
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Organizations running OpenAM before 16.1.4 as an access management or single sign-on server. Exposure is highest where remote SDK endpoints, classic login pages or the administration console accept requests from untrusted networks. Installations already on 16.1.4 or later are not affected.
Not affected if internal-only-endpoints, version-16.1.4-or-later
Who cares java, openam, self-hosted, sso
16.1.4.16.1.4 or later.OpenAM before 16.1.4 contains a denial of service vulnerability that allows unauthenticated attackers to exhaust server resources by sending serialized Java data without size or structure limits. Attackers can send small crafted requests to remote SDK endpoints, classic login pages, or the administration console to block authentication, session validation and policy decisions.
This page as .md · .json · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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