# Leantime has Host Header Injection Vulnerability

Source: https://junglewise.ai/threats/leantime-has-host-header-injection-vulnerability-c36e4331  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-02-21  
License: CC BY 4.0 with a link back

Severity: low · CVSS 3.1 · Published 2025-02-21

Leantime has Host Header Injection Vulnerability

Technologies: [leantime/leantime (Packagist)](https://junglewise.ai/threats/technologies/leantime-leantime). Vendors: [Packagist](https://junglewise.ai/threats/vendors/packagist).

## Quick answers

**Is This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** Low severity, with a CVSS score of 3.1, published 21 February 2025.

**Which products and versions are affected?** leantime/leantime (Packagist) ECOSYSTEM:introduced=0,fixed=3.1.2.

**Is there a fix for This vulnerability?** Yes. leantime/leantime (Packagist): upgrade to 3.1.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected?** Check whether you run leantime/leantime (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- leantime/leantime (Packagist): upgrade to 3.1.2 or later

  ```sh
  composer require leantime/leantime:^3.1.2
  ```


## Affected products

- leantime/leantime (Packagist) ECOSYSTEM:introduced=0,fixed=3.1.2

## Related threats

- [Leantime privilege escalation via unauthorized JSON-RPC methods](https://junglewise.ai/threats/cve-2026-85990-leantime-any-authenticated-user-can-self-escalate-to-admin-via)
- [Leantime has HTML injection through firstname and lastname fields](https://junglewise.ai/threats/leantime-has-html-injection-through-firstname-and-lastname-fields-7186876f)
- [Duplicate Advisory: Leantime affected by Improper Neutralization of HTML Tags](https://junglewise.ai/threats/duplicate-advisory-leantime-affected-by-improper-neutralization-of-html-e7da6b80)
- [Leantime allows Cross-Site Scripting (XSS)](https://junglewise.ai/threats/leantime-allows-cross-site-scripting-xss-225f3c99)
- [Leantime affected by Improper Neutralization of HTML Tags](https://junglewise.ai/threats/cve-2025-28254-leantime-affected-by-improper-neutralization-of-html-tags)