GHSA-458h-wv48-fq75 — keycloak-parent
MEDIUMGHSA-458h-wv48-fq75 is a medium-severity (CVSS 5.4) Cross-site Scripting (XSS) vulnerability in org.keycloak:keycloak-parent. No vendor fix is recorded yet; mitigation options are listed below.
Keycloak vulnerable to cross-site scripting via the state parameter
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
GHSA-458h-wv48-fq75 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 377,636 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
org.keycloak:keycloak-parent☕org.keycloak:keycloak-parent☕org.keycloak:keycloak-parentReal-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 flaw was found in Keycloak 3.4.3.Final, 4.0.0.Beta2, 4.3.0.Final. When using response_mode=form_post it is possible to inject arbitrary Javascript-Code via the 'state'-parameter in the authentication URL. This allows an XSS-Attack upon succesfully login.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.keycloak:keycloak-parent | all versions | No fix |
| ☕Maven | org.keycloak:keycloak-parent | ≥ 4.0.0.Beta1 | No fix |
| ☕Maven | org.keycloak:keycloak-parent | all versions | No fix |
Detection & mitigation playbook
Open-source dependencyDetect
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.
Remediation status
No patched version of org.keycloak:keycloak-parent has shipped for GHSA-458h-wv48-fq75 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
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.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-458h-wv48-fq75 can be triaged on real exposure rather than presence alone.
Tailored to GHSA-458h-wv48-fq75. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
| Product | Fixed in | Advisory |
|---|---|---|
| Red Hat Single Sign-On 7.2.5 zip | see advisory | RHSA-2018:3595 |
| Red Hat Single Sign-On 7.2 for RHEL 6 | rh-sso7-keycloak-0:3.4.14-1.Final_redhat_00001.1.jbcs.el6 | RHSA-2018:3592 |
| Red Hat Single Sign-On 7.2 for RHEL 7 | rh-sso7-keycloak-0:3.4.14-1.Final_redhat_00001.1.jbcs.el7 | RHSA-2018:3593 |
Frequently Asked Questions
Is GHSA-458h-wv48-fq75 in your dependencies?
O3 Security finds GHSA-458h-wv48-fq75 across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.