Microweber has Reflected XSS Vulnerability in the layout ParameterGHSA-mvj3-hc7j-vp74
MEDIUMGHSA-mvj3-hc7j-vp74 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in microweber/microweber. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for GHSA-mvj3-hc7j-vp74.
EPSS Exploitation Probability
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
microweber/microweberReal-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
Reflected Cross-Site Scripting (XSS) in Microweber CMS 2.0 via the layout parameter on the /admin/page/create page allows arbitrary JavaScript execution in the context of authenticated admin users.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | microweber/microweber | ≥ 2.0.0 | No fix |
Affected Products
microwebermicroweberDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for microweber/microweber, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
The records we use list no patched version of microweber/microweber for GHSA-mvj3-hc7j-vp74. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.
Mitigate without a patch
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.
How to detect GHSA-mvj3-hc7j-vp74
A community-maintained Nuclei template exists for this CVE. You can scan for it directly:
nuclei -id ghsa-mvj3-hc7j-vp74 -u https://target- Template
- Microweber CMS 2.0 - Reflected XSS in Admin Page Creation
- Severity
- medium
- Impact
- Authenticated attackers can execute arbitrary JavaScript in victim browsers through the layout parameter in page creation, potentially enabling session hijacking and credential theft.
- Remediation
- Upgrade Microweber CMS to a version later than 2.0 that properly sanitizes the layout parameter.
Template by ProjectDiscovery nuclei-templates (nukunga), MIT licensed. View the full template. Scan only systems you are authorised to test.
Frequently Asked Questions
Is GHSA-mvj3-hc7j-vp74 in your dependencies?
Find it across Packagist, including transitive dependencies.