CVE-2025-51502: Microweber/microweber Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-mvj3-hc7j-vp74
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CVSS 6.1
CWE-79
Published
Advisory Summary

CVE-2025-51502 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Microweber/microweber libraries in the Packagist ecosystem. The issue involves microweber has reflected xss vulnerability in the layout parameter. Remediation is available in the latest vendor maintenance releases.

CVE-2025-51502 at a Glance

CVE Identifier CVE-2025-51502
GHSA Identifier GHSA-mvj3-hc7j-vp74
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Microweber/microweber
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2025-51502

To remediate this vulnerability, upgrade all affected Microweber/microweber dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

microweber/microweber fixed: Latest secure release 
Upgrade microweber/microweber to Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for microweber/microweber

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-51502, inspect your project dependencies for Microweber/microweber:

inspect dependencies for microweber/microweber

Analyze the terminal output to locate any version of Microweber/microweber in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Microweber/microweber, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2025-51502 Affected Microweber/microweber Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
microweber/microweber
 Packagist
≥ 2.0.0
≤ 2.0.19

References

NVD — CVE-2025-51502 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-51502
Microweber/microweber Source Repository REPOSITORY
https://github.com/microweber/microweber
Microweber/microweber Source Repository REPOSITORY
https://github.com/progprnv/CVE-Reports
Microweber/microweber Source Repository REPOSITORY
https://github.com/progprnv/CVE-Reports/blob/main/CVE-2025-51502
Microweber/microweber Source Repository REPOSITORY
https://github.com/progprnv/CVE-Reports/blob/main/MICROWEBER%20%5BAdmin%20Panel%5D%20Reflected%20XSS%20on%20layout%20parameter.md

Frequently Asked Questions

What is CVE-2025-51502?
CVE-2025-51502 is a security vulnerability in Microweber/microweber involving Microweber has Reflected XSS Vulnerability in the layout Parameter under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Microweber/microweber versions are affected?
Affected versions include releases prior to current release patches across affected packages: microweber/microweber.
What version fixes CVE-2025-51502?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is microweber/microweber affected?
Yes, microweber/microweber is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2025-51502?
CVE-2025-51502 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2025-51502?
CVE-2025-51502 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Packagist dependencies for CVE-2025-51502?
Run the dependency tree command: 'inspect dependencies for microweber/microweber'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-mvj3-hc7j-vp74",
  "modified" : "2025-08-01T21:06:43Z",
  "published" : "2025-08-01T18:31:18Z",
  "aliases" : [ "CVE-2025-51502" ],
  "summary" : "Microweber has Reflected XSS Vulnerability in the layout Parameter",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "microweber/microweber"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.0"
      }, {
        "last_affected" : "2.0.19"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-51502"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/microweber/microweber"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/progprnv/CVE-Reports"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/progprnv/CVE-Reports/blob/main/CVE-2025-51502"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/progprnv/CVE-Reports/blob/main/MICROWEBER%20%5BAdmin%20Panel%5D%20Reflected%20XSS%20on%20layout%20parameter.md"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-08-01T21:06:43Z",
    "nvd_published_at" : "2025-08-01T17:15:52Z"
  }
}