CVE-2026-46389Network attack vector

Client impersonation via overwritten secret comparison

Published Jun 5, 2026 · Updated Jun 5, 2026

Authentication bypass in Defense Unicorns UDS Identity Config 0.11.0 through 0.26.0 allows remote attackers to obtain client tokens. The ClientIdAndKubernetesSecretAuthenticator overwrites the submitted client_secret with the mounted Kubernetes secret before comparing them. Reachability of the Keycloak token endpoint and knowledge of an affected client_id are sufficient; the issued token inherits that client's service-account roles.

CVSS severity10.0
Critical
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Defense Unicorns UDS Identity Config 0.11.0 through 0.26.0 allows remote attackers to obtain client tokens. The ClientIdAndKubernetesSecretAuthenticator overwrites the submitted client_secret with the mounted Kubernetes secret before comparing them. Reachability of the Keycloak token endpoint and knowledge of an affected client_id are sufficient; the issued token inherits that client's service-account roles.

The record

CVE
CVE-2026-46389
Published
Jun 5, 2026
Updated
Jun 5, 2026
Vendor
Defense Unicorns
Product
UDS Identity Config
Classifications
CWE-287, CWE-303, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 5, 2026Record 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=>= 0.11.0, < 0.26.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Defense Unicorns · UDS Identity Configversion=>= 0.11.0, < 0.26.1

Published CVSS scores

10.0GitHub CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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-287Improper Authentication
CWE-303Incorrect Implementation of Authentication Algorithm
T1190Exploit Public-Facing Application

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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