How severe is GHSA-m98g-63qj-fp8j?

No CVSS score has been assigned to GHSA-m98g-63qj-fp8j yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-m98g-63qj-fp8j?

GHSA-m98g-63qj-fp8j affects the following packages: org.keycloak:keycloak-parent (Maven). Ecosystems affected: Maven.

How do I fix GHSA-m98g-63qj-fp8j?

Update org.keycloak:keycloak-parent to 18.0.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-m98g-63qj-fp8j is resolved across your whole dependency graph.

How do I detect GHSA-m98g-63qj-fp8j in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.keycloak:keycloak-parent, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-m98g-63qj-fp8j if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is GHSA-m98g-63qj-fp8j actively exploited in the wild?

No public exploit code has been indexed for GHSA-m98g-63qj-fp8j yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

When was GHSA-m98g-63qj-fp8j published, and has it been updated?

GHSA-m98g-63qj-fp8j was published on April 28, 2022 and was last updated on November 28, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

Reflected XSS on clients-registrations endpoint

Real-World Exposure

1 pkg affected

☕org.keycloak:keycloak-parent

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

A POST based reflected Cross Site Scripting vulnerability on has been identified in Keycloak. When a malicious request is sent to the client registration endpoint, the error message is not properly escaped, allowing an attacker to execute malicious scripts into the user's browser.

Acknowledgement

Keycloak would like to thank Quentin TEXIER (Pentester at Opencyber) for reporting this issue.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.keycloak:keycloak-parent`	≥ 10.0.0&&< 18.0.0	18.0.0`org.keycloak:keycloak-parent:18.0.0`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.keycloak:keycloak-parent, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.keycloak:keycloak-parent to 18.0.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-m98g-63qj-fp8j is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

A POST based reflected Cross Site Scripting vulnerability on has been identified in Keycloak. When a malicious request is sent to the client registration endpoint, the error message is not properly escaped, allowing an attacker to execute malicious scripts into the user's browser. ### Acknowledgement Keycloak would like to thank Quentin TEXIER (Pentester at Opencyber) for reporting this issue.

O3 Security · Impact-Aware SCA

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Reflected XSS on clients-registrations endpointGHSA-m98g-63qj-fp8j