GHSA-mg4c-884j-pcq9: Leantime/leantime Cross-Site Scripting Vulnerability

MODERATE
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CWE-79
Published
Advisory Summary

GHSA-mg4c-884j-pcq9 is a MODERATE cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Leantime/leantime libraries in the Packagist ecosystem. The issue involves leantime allows stored cross-site scripting (xss). Remediation is available by upgrading affected packages to version 3.3.

GHSA-mg4c-884j-pcq9 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-mg4c-884j-pcq9
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Leantime/leantime
Package Ecosystem Packagist
Published Date
Last Updated

How to Fix GHSA-mg4c-884j-pcq9

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

leantime/leantime fixed: 3.3 
Upgrade leantime/leantime to 3.3
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 leantime/leantime

How to Check if You Are Affected

To determine whether your application is affected by GHSA-mg4c-884j-pcq9, inspect your project dependencies for Leantime/leantime:

inspect dependencies for leantime/leantime

Analyze the terminal output to locate any version of Leantime/leantime in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.3), 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 Leantime/leantime, 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

STORED XSS +OPEN REDIRECTION in SVG uploads Vulnerable url:https://hack.leantime.io/projects/showProject/3

GHSA-mg4c-884j-pcq9 Affected Leantime/leantime Versions

1 component(s)
Fixed Versions:
3.3
Product / Package Ecosystem Affected Versions Fixed Version
leantime/leantime
 Packagist
< 3.3
3.3

References

GitHub Advisory / Wiki ADVISORY
https://github.com/Leantime/leantime/security/advisories/GHSA-mg4c-884j-pcq9
Security Fix Commit FIX COMMIT
https://github.com/Leantime/leantime/commit/d8b1099b0629da64ad30a1c4daee104fadc6c227
Leantime/leantime Source Repository REPOSITORY
https://github.com/Leantime/leantime

Frequently Asked Questions

What is GHSA-mg4c-884j-pcq9?
GHSA-mg4c-884j-pcq9 is a security vulnerability in Leantime/leantime involving Leantime allows Stored Cross-Site Scripting (XSS) under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Leantime/leantime versions are affected?
Affected versions include releases prior to 3.3 across affected packages: leantime/leantime.
What version fixes GHSA-mg4c-884j-pcq9?
Upgrading to 3.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is leantime/leantime affected?
Yes, leantime/leantime is affected in releases prior to 3.3. Upgrade your dependency to 3.3 or later.
What CWE is associated with GHSA-mg4c-884j-pcq9?
GHSA-mg4c-884j-pcq9 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 GHSA-mg4c-884j-pcq9?
Run the dependency tree command: 'inspect dependencies for leantime/leantime'. 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-mg4c-884j-pcq9",
  "modified" : "2025-02-21T22:14:58Z",
  "published" : "2025-02-21T22:14:58Z",
  "aliases" : [ ],
  "summary" : "Leantime allows Stored Cross-Site Scripting (XSS)",
  "details" : "STORED XSS +OPEN REDIRECTION in SVG uploads\nVulnerable url:https://hack.leantime.io/projects/showProject/3",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "leantime/leantime"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/Leantime/leantime/security/advisories/GHSA-mg4c-884j-pcq9"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Leantime/leantime/commit/d8b1099b0629da64ad30a1c4daee104fadc6c227"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/Leantime/leantime"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-02-21T22:14:58Z",
    "nvd_published_at" : null
  }
}