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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
OpenIdentityPlatform OpenAM unaffected
Version Status Constraints
0 affected < 16.1.4
16.1.4 unaffected —
OpenIdentityPlatform OpenAM unaffected
Version Status Constraints
0 affected < 16.1.4
16.1.4 unaffected —
OpenIdentityPlatform OpenAM unaffected
Version Status Constraints
0 affected < 16.1.4
16.1.4 unaffected —
OpenIdentityPlatform OpenAM unaffected
Version Status Constraints
0 affected < 16.1.4
16.1.4 unaffected —

No data.

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Project Subscriptions

Vendors Products
Openidentityplatform Subscribe
Openam Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-x7wr-5gxg-v833 cve-icon
https://www.vulncheck.com/advisories/openam-before-16.1.4-unauthenticated-dos-via-unbounded-java-deserialisation cve-icon
History

Sun, 08 Nov 2026 01:45:00 +0000

Type Values Removed Values Added
Description 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.
Title OpenAM before 16.1.4 Unauthenticated DoS via Unbounded Java Deserialisation
First Time appeared Openidentityplatform
Openidentityplatform openam
Weaknesses CWE-770
CPEs cpe:2.3:a:openidentityplatform:openam:*:*:*:*:*:*:*:*
Vendors & Products Openidentityplatform
Openidentityplatform openam
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-08T01:37:49.366Z

Reserved: 2026-11-06T00:48:46.279Z

Link: CVE-2026-123543

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses