CVE-2023-50550: Layui Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-rcvr-8whx-3m5p
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CVSS 5.4
CWE-79
Published
Advisory Summary

CVE-2023-50550 is a MODERATE (CVSS 5.4) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Layui libraries in the npm ecosystem. The issue involves layui cross-site scripting (xss) vulnerability. Remediation is available by upgrading affected packages to version 2.7.5.

CVE-2023-50550 at a Glance

CVE Identifier CVE-2023-50550
GHSA Identifier GHSA-rcvr-8whx-3m5p
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Layui
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 5.4

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
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-2023-50550

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

layui fixed: 2.7.5 
npm install layui@2.7.5
Verify Direct and Transitive Dependencies

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

npm ls layui

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2023-50550, inspect your project dependencies using npm:

npm ls layui

Analyze the terminal output to locate any version of Layui in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.7.5), your application is affected.

Note: The npm ls layui command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

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 Layui, 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

layui up to v2.74 was discovered to contain a cross-site scripting (XSS) vulnerability via the data-content parameter.

CVE-2023-50550 Affected Layui Versions

1 component(s)
Fixed Versions:
2.7.5
Product / Package Ecosystem Affected Versions Fixed Version
layui
npm/layui
npm
< 2.7.5
2.7.5

References

NVD — CVE-2023-50550 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-50550
gitee.com/layui/layui/issues/... WEB
https://gitee.com/layui/layui/issues/I8M1C2
gitee.com/layui/layui/issues WEB
https://gitee.com/layui/layui/issues?utf8=%E2%9C%93&state=all&issue_search=xss
Layui Source Repository REPOSITORY
https://github.com/layui/layui

Frequently Asked Questions

What is CVE-2023-50550?
CVE-2023-50550 is a security vulnerability in Layui involving Layui cross-site scripting (XSS) vulnerability under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Layui versions are affected?
Affected versions include releases prior to 2.7.5 across affected packages: layui.
What version fixes CVE-2023-50550?
Upgrading to 2.7.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is layui affected?
Yes, layui is affected in releases prior to 2.7.5. Upgrade your dependency to 2.7.5 or later.
What is the CVSS score of CVE-2023-50550?
CVE-2023-50550 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2023-50550?
CVE-2023-50550 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 npm dependencies for CVE-2023-50550?
Run the dependency tree command: 'npm ls layui'. 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-rcvr-8whx-3m5p",
  "modified" : "2024-01-08T15:55:06Z",
  "published" : "2023-12-30T18:30:35Z",
  "aliases" : [ "CVE-2023-50550" ],
  "summary" : "Layui cross-site scripting (XSS) vulnerability",
  "details" : "layui up to v2.74 was discovered to contain a cross-site scripting (XSS) vulnerability via the data-content parameter.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "layui"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.7.5"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2.7.4"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-50550"
  }, {
    "type" : "WEB",
    "url" : "https://gitee.com/layui/layui/issues/I8M1C2"
  }, {
    "type" : "WEB",
    "url" : "https://gitee.com/layui/layui/issues?utf8=%E2%9C%93&state=all&issue_search=xss"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/layui/layui"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-01-03T21:42:34Z",
    "nvd_published_at" : "2023-12-30T16:15:44Z"
  }
}