CVE-2026-46389: UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed

This month

CRITICAL 10.0REMOTEUPGRADE

CVE-2026-46389 is a critical-severity flaw (CVSS 10.0) affecting uds identity config. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS Core's Identity deployment. In versions 0.11.0 through 0.26.0, a logic error in the `client-kubernetes-secret` Keycloak client authenticator (shipped by `uds-identity-config` and consumed by UDS Core) causes the submitted `client_secret` to be overwritten with the mounted Kubernetes secret before comparison. An attacker who can re

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	10.0 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 73%)
CISA exploited list	No
Weakness	CWE-287, CWE-303
Published	2026-06-05
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: defenseunicorns

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-05 19:16 UTCPublished CVE record published
2026-10-26 11:10 UTCUpdated Record last modified

defenseunicorns uds identity config UPGRADE

Affected: >= 0.11.0 and < 0.26.1

Fixed in: 0.26.1

Safe to downgrade to: a release before 0.11.0

1. Check installed version

apt-cache policy uds-identity-config || rpm -q uds-identity-config || uds-identity-config --version

2. UPGRADE to 0.26.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade uds-identity-config

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade uds-identity-config

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 0.11.0 (Debian / Ubuntu)

apt-cache madison uds-identity-config sudo apt install uds-identity-config=<VERSION_BEFORE_0.11.0> sudo apt-mark hold uds-identity-config

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list uds-identity-config sudo dnf downgrade uds-identity-config-<VERSION_BEFORE_0.11.0> sudo dnf versionlock add uds-identity-config

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-46389?

uds identity config: upgrade to 0.26.1. Exact commands for each OS are on this page.

Is CVE-2026-46389 being exploited?

CVE-2026-46389 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-46389 affect?

CVE-2026-46389 affects uds identity config. Severity is critical (CVSS 10.0). UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS Core's Identity deployment. In versions 0.11.0 through 0.26.0, a logic error in the `client-kubernetes-secret` Keycloak cl

How urgent is CVE-2026-46389?

Priority 47/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Kubernetes vulnerabilities · Keycloak vulnerabilities

References

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