CVE-2026-123543 PUBLISHED

OpenAM before 16.1.4 Unauthenticated DoS via Unbounded Java Deserialisation

Assigner: VulnCheck
Reserved: 06.11.2026 Published: 08.11.2026 Updated: 08.11.2026

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.

Metrics

CVSS Vector: 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
CVSS Score: 8.7

Product Status

Vendor OpenIdentityPlatform
Product OpenAM
Versions Default: unaffected
  • affected from 0 to 16.1.4 (excl.)
  • Version 16.1.4 is unaffected
Vendor OpenIdentityPlatform
Product OpenAM
Versions Default: unaffected
  • affected from 0 to 16.1.4 (excl.)
  • Version 16.1.4 is unaffected
Vendor OpenIdentityPlatform
Product OpenAM
Versions Default: unaffected
  • affected from 0 to 16.1.4 (excl.)
  • Version 16.1.4 is unaffected
Vendor OpenIdentityPlatform
Product OpenAM
Versions Default: unaffected
  • affected from 0 to 16.1.4 (excl.)
  • Version 16.1.4 is unaffected

Credits

  • manus-pi reporter
  • vharseko remediation developer
  • maximthomas remediation reviewer
  • tsujiguchitky remediation reviewer
  • manus-use reporter

References

Problem Types

  • Allocation of Resources Without Limits or Throttling CWE