How severe is GHSA-99rh-vxmc-7wgf?

GHSA-99rh-vxmc-7wgf has a CVSS score of 6.1/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by GHSA-99rh-vxmc-7wgf?

GHSA-99rh-vxmc-7wgf affects the following packages: ezsystems/ezplatform-admin-ui (Packagist), ezsystems/ezplatform-admin-ui (Packagist). Ecosystems affected: Packagist.

How do I fix GHSA-99rh-vxmc-7wgf?

Update ezsystems/ezplatform-admin-ui to 1.3.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-99rh-vxmc-7wgf is resolved across your whole dependency graph.

How do I detect GHSA-99rh-vxmc-7wgf in my Packagist dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ezsystems/ezplatform-admin-ui, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-99rh-vxmc-7wgf if there is no patch (or I can't update yet)?

Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Is GHSA-99rh-vxmc-7wgf actively exploited in the wild?

No public exploit code has been indexed for GHSA-99rh-vxmc-7wgf 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.

What is the EPSS score for GHSA-99rh-vxmc-7wgf?

GHSA-99rh-vxmc-7wgf has an EPSS (Exploit Prediction Scoring System) score of 0.8%, placing it in the 58th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is GHSA-99rh-vxmc-7wgf?

GHSA-99rh-vxmc-7wgf is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was GHSA-99rh-vxmc-7wgf published, and has it been updated?

GHSA-99rh-vxmc-7wgf was published on May 24, 2022 and was last updated on April 25, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘

🐘 Packagist

Not in CISA KEV

MEDIUM severity

ezplatform-admin-ui Cross-site Scripting (XSS) vulnerabilityGHSA-99rh-vxmc-7wgf

MEDIUM

GHSA-99rh-vxmc-7wgf is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in ezsystems/ezplatform-admin-ui. A fix is available for ezsystems/ezplatform-admin-ui — see the affected versions and patch details below.

Also known asCVE-2019-12139

Published

May 24, 2022

Updated

Apr 25, 2024

Affected

2 pkgs

Patched

2 / 2

Exploits

None indexed

Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

0.8%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs58th percentile — riskier than 58% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

2 pkgs affected

🐘ezsystems/ezplatform-admin-ui🐘ezsystems/ezplatform-admin-ui

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

Description

An XSS issue was discovered in the Admin UI in eZ Platform 2.x. This affects ezplatform-admin-ui 1.3.x before 1.3.5 and 1.4.x before 1.4.4, and ezplatform-page-builder 1.1.x before 1.1.5 and 1.2.x before 1.2.4.

Affected Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`ezsystems/ezplatform-admin-ui`	≥ 1.3&&< 1.3.5	1.3.5`composer require ezsystems/ezplatform-admin-ui:^1.3.5`
🐘Packagist	`ezsystems/ezplatform-admin-ui`	≥ 1.4&&< 1.4.4	1.4.4`composer require ezsystems/ezplatform-admin-ui:^1.4.4`

Affected Products

2 products · 4 configurations

Application

ezplatform-admin-uiez

≥ 1.4.0 && < 1.4.4

range

Application

ezplatform-page-builderez

≥ 1.2.0 && < 1.2.4

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ezsystems/ezplatform-admin-ui, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update ezsystems/ezplatform-admin-ui to 1.3.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-99rh-vxmc-7wgf is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is GHSA-99rh-vxmc-7wgf in your dependencies?

Find it across Packagist, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

6.1/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Raw vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CWE Classification

CWE-79Cross-site Scripting (XSS)

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

Timeline

Disclosed

May 24, 2022

Last updated

Apr 25, 2024

Identifiers

GHSA-99rh-vxmc-7wgf

References

Advisorynvd.nist.gov · CVE 2019 12139 Webshare.ez.no · ezsa 2019 001 xss in admin ui

Related vulnerabilities

This CVE is medium severity; 8 of 8 other CVEs affecting ezsystems/ezplatform-admin-ui are rated as high or higher (top: critical).

GHSA-99c7-c3mw-mxhvGHSA-r7pm-mw8g-p7pxGHSA-gc5h-6jx9-q2qhGHSA-cg84-55jx-4237GHSA-q73v-79x3-jv2wGHSA-58h5-h554-429qGHSA-pcpm-vc4v-cmvxCVE-2019-12139

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedApr 25, 2024