CVE-2025-64099Network attack vector

Identity impersonation via unchecked requested OIDC claims

Published Nov 12, 2025 · Updated Nov 12, 2025

OIDC claim injection in Open Identity Platform OpenAM before 16.0.0 allows remote attackers to assume identities via crafted authorization requests. The oidc-claims-extension.groovy attributeRetriever returned a sole requested claim value without checking it against the authenticated identity's stored attribute. Exploitation requires claims_parameter_supported to be enabled and a client to trust the attacker-controlled claim, such as an email address, for identity decisions.

CVSS severityUnavailable
Unscored
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OIDC claim injection in Open Identity Platform OpenAM before 16.0.0 allows remote attackers to assume identities via crafted authorization requests. The oidc-claims-extension.groovy attributeRetriever returned a sole requested claim value without checking it against the authenticated identity's stored attribute. Exploitation requires claims_parameter_supported to be enabled and a client to trust the attacker-controlled claim, such as an email address, for identity decisions.

The record

CVE
CVE-2025-64099
Published
Nov 12, 2025
Updated
Nov 12, 2025
Vendor
Open Identity Platform
Product
OpenAM
Classifications
CWE-74, T1606
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 16.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Open Identity Platform · OpenAMversion=< 16.0.0

Published CVSS scores

8.1GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1606Forge Web Credentials

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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