Summary
eZ Platform Editor Cross-site Scripting (XSS)
This Security Advisory is about two issues of low to medium severity. We recommend that you install the update as soon as possible.
There is an XSS vulnerability in CKEditor, which is used by AlloyEditor, which is used in eZ Platform Admin UI. Scripts can be injected through specially crafted "protected" comments. We are not sure it is exploitable in eZ Platform, but recommend installing it to be on the safe side. It is fixed in CKEditor v4.14, AlloyEditor v2.11.9. It is distributed via Composer, for:
eZ Platform v1.13.x: ezsystems/PlatformUIAssetsBundle v4.2.3 (included from ezsystems/PlatformUIBundle v1.13.x)
eZ Platform v2.5.13: ezsystems/ezplatform-admin-ui-assets v4.2.1
eZ Platform v3.0.*: ezsystems/ezplatform-admin-ui-assets v5.0.1
eZ Platform v3.1.2: ezsystems/ezplatform-admin-ui-assets v5.1.1
Drafts that are sent to trash become visible in the Review Queue, even for users that were not able to see them before this action. It's not possible to preview them, but their title and review history is displayed. This affects Enterprise Edition only, of which ezplatform-workflow is a part. This security update is distributed via Composer, for
eZ Platform EE v2.5.13: ezsystems/ezplatform-workflow v1.1.9
eZ Platform EE v3.1.2: ezsystems/ezplatform-workflow v2.1.1
Impact
Untrusted input is rendered as active markup in a victim's browser, which can run script in their session. Typical impact: session or credential theft, and actions taken as the user.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
Already deployed Kodem?
See it in your environmentNew to Kodem? Get a demo →Remediation advice
ezsystems/ezplatform-admin-ui-assets to 4.2.1 or later; ezsystems/ezplatform-admin-ui-assets to 5.0.1 or later; ezsystems/ezplatform-admin-ui-assets to 5.1.1 or later
Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.
Frequently Asked Questions
- What is GHSA-4C2W-V5RQ-5MX7? GHSA-4C2W-V5RQ-5MX7 is a medium-severity cross-site scripting (XSS) vulnerability in ezsystems/ezplatform-admin-ui-assets (composer), affecting versions >= 4.2.0, < 4.2.1. It is fixed in 4.2.1, 5.0.1, 5.1.1. Untrusted input is rendered as active markup in a victim's browser, which can run script in their session.
- Which versions of ezsystems/ezplatform-admin-ui-assets are affected by GHSA-4C2W-V5RQ-5MX7? ezsystems/ezplatform-admin-ui-assets (composer) versions >= 4.2.0, < 4.2.1 is affected.
- Is there a fix for GHSA-4C2W-V5RQ-5MX7? Yes. GHSA-4C2W-V5RQ-5MX7 is fixed in 4.2.1, 5.0.1, 5.1.1. Upgrade to this version or later.
- Is GHSA-4C2W-V5RQ-5MX7 exploitable, and should I be worried? Whether GHSA-4C2W-V5RQ-5MX7 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether GHSA-4C2W-V5RQ-5MX7 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix GHSA-4C2W-V5RQ-5MX7?
- Upgrade
ezsystems/ezplatform-admin-ui-assetsto 4.2.1 or later - Upgrade
ezsystems/ezplatform-admin-ui-assetsto 5.0.1 or later - Upgrade
ezsystems/ezplatform-admin-ui-assetsto 5.1.1 or later
- Upgrade