CVE-2025-28254: Leantime/leantime Leantime Affected By Improper Neutralization Vulnerability

MODERATE
Advisory Identifier: GHSA-95j3-435g-vjcp
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CVSS 6.5
CWE-80 CWE-79
Published
Advisory Summary

CVE-2025-28254 is a MODERATE (CVSS 6.5) leantime affected by improper neutralization vulnerability (CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)) affecting Leantime/leantime libraries in the Packagist ecosystem. The issue involves leantime affected by improper neutralization of html tags. Remediation is available by upgrading affected packages to version 3.3.

CVE-2025-28254 at a Glance

CVE Identifier CVE-2025-28254
GHSA Identifier GHSA-95j3-435g-vjcp
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
Affected Product Leantime/leantime
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.5

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:N/S:U/C:N/I:H/A:N).

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

How to Fix CVE-2025-28254

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 CVE-2025-28254, 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-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS), where the product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages. 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

### Summary HTML can be arbitrarily injected into emails from Leantime due to improper neutralization of HTML tags in users' first names. This effectively allows for the creation of phishing emails from a Leantime instance's email address.

CVE-2025-28254 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-95j3-435g-vjcp
NVD — CVE-2025-28254 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-28254
Security Fix Commit FIX COMMIT
https://github.com/Leantime/leantime/commit/ce1d2073e4601183e1bdd90f4b433d16aee46a50
Leantime/leantime Source Repository REPOSITORY
https://github.com/Leantime/leantime
Leantime/leantime Source Repository REPOSITORY
https://github.com/Leantime/leantime/blob/0e7ddbbe3d582f657a1dddfef7b3419ae588cbf7/app/Domain/Notifications/Services/Notifications.php#L128

Frequently Asked Questions

What is CVE-2025-28254?
CVE-2025-28254 is a security vulnerability in Leantime/leantime involving Leantime affected by Improper Neutralization of HTML Tags under CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS).
Which Leantime/leantime versions are affected?
Affected versions include releases prior to 3.3 across affected packages: leantime/leantime.
What version fixes CVE-2025-28254?
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 is the CVSS score of CVE-2025-28254?
CVE-2025-28254 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2025-28254?
CVE-2025-28254 is classified under CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) (The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages.).
How can I check Packagist dependencies for CVE-2025-28254?
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-95j3-435g-vjcp",
  "modified" : "2025-03-31T15:58:10Z",
  "published" : "2025-02-21T23:54:26Z",
  "aliases" : [ "CVE-2025-28254" ],
  "summary" : "Leantime affected by Improper Neutralization of HTML Tags",
  "details" : "### Summary\n\nHTML can be arbitrarily injected into emails from Leantime due to improper neutralization of HTML tags in users' first names. This effectively allows for the creation of phishing emails from a Leantime instance's email address.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A: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-95j3-435g-vjcp"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-28254"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Leantime/leantime/commit/ce1d2073e4601183e1bdd90f4b433d16aee46a50"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/Leantime/leantime"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Leantime/leantime/blob/0e7ddbbe3d582f657a1dddfef7b3419ae588cbf7/app/Domain/Notifications/Services/Notifications.php#L128"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79", "CWE-80" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-02-21T23:54:26Z",
    "nvd_published_at" : null
  }
}