GHSA-99r5-84gr-59f6: Leantime/leantime Leantime Has Host Header Injection Vulnerability

MODERATE
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CVSS 6.5
CWE-74
Published
Advisory Summary

GHSA-99r5-84gr-59f6 is a MODERATE (CVSS 6.5) leantime has host header injection vulnerability (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')) affecting Leantime/leantime libraries in the Packagist ecosystem. The issue involves leantime has host header injection vulnerability. Remediation is available by upgrading affected packages to version 3.1.2.

GHSA-99r5-84gr-59f6 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-99r5-84gr-59f6
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
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:H/I:N/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 High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix GHSA-99r5-84gr-59f6

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: 3.1.2 
Upgrade leantime/leantime to 3.1.2
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-99r5-84gr-59f6, 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 3.1.2), 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-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'), where the product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. 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 A host header injection vulnerability has been identified in the user details viewing functionality of the system. This vulnerability allows an attacker to manipulate the host header in HTTP requests, thereby gaining unauthorized access to view details of other users.

GHSA-99r5-84gr-59f6 Affected Leantime/leantime Versions

1 component(s)
Fixed Versions:
3.1.2
Product / Package Ecosystem Affected Versions Fixed Version
leantime/leantime
 Packagist
< 3.1.2
3.1.2

References

GitHub Advisory / Wiki ADVISORY
https://github.com/Leantime/leantime/security/advisories/GHSA-99r5-84gr-59f6
Leantime/leantime Source Repository REPOSITORY
https://github.com/Leantime/leantime

Frequently Asked Questions

What is GHSA-99r5-84gr-59f6?
GHSA-99r5-84gr-59f6 is a security vulnerability in Leantime/leantime involving Leantime has Host Header Injection Vulnerability under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection').
Which Leantime/leantime versions are affected?
Affected versions include releases prior to 3.1.2 across affected packages: leantime/leantime.
What version fixes GHSA-99r5-84gr-59f6?
Upgrading to 3.1.2 (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 3.1.2. Upgrade your dependency to 3.1.2 or later.
What is the CVSS score of GHSA-99r5-84gr-59f6?
GHSA-99r5-84gr-59f6 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:H/I:N/A:N.
What CWE is associated with GHSA-99r5-84gr-59f6?
GHSA-99r5-84gr-59f6 is classified under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.).
How can I check Packagist dependencies for GHSA-99r5-84gr-59f6?
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-99r5-84gr-59f6",
  "modified" : "2025-02-21T22:14:50Z",
  "published" : "2025-02-21T22:14:50Z",
  "aliases" : [ ],
  "summary" : "Leantime has Host Header Injection Vulnerability ",
  "details" : "### Summary\nA host header injection vulnerability has been identified in the user details viewing functionality of the system. This vulnerability allows an attacker to manipulate the host header in HTTP requests, thereby gaining unauthorized access to view details of other users.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "leantime/leantime"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.1.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/Leantime/leantime/security/advisories/GHSA-99r5-84gr-59f6"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/Leantime/leantime"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-74" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-02-21T22:14:50Z",
    "nvd_published_at" : null
  }
}