# GHSA-qrfh-cc86-vc8c: Leantime has HTML injection through firstname and lastname fields

> Authenticated users can inject HTML into user profiles, leading to stored XSS attacks against other users viewing the content.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 5 Mar 2026

## What is GHSA-qrfh-cc86-vc8c?

GHSA-qrfh-cc86-vc8c is a cross-site scripting vulnerability in leantime/leantime, published on 5 Mar 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

### Summary
Leantime v2.3.27 is vulnerable to Stored HTML Injection. The `firstname` and `lastname` fields in the admin user edit page are rendered without  HTML escaping, allowing an authenticated user to inject arbitrary HTML that executes when the profile is viewed.

### Vulnerable File
`app/Domain/Users/Templates/editUser.tpl.php`

### Vulnerable Code (Lines ~14-17)
```php
value="<?php echo $values['firstname'] ?>"
value="<?php echo $values['lastname'] ?>"
```
These fields output raw user input without sanitization.

### Steps to Reproduce
1. Login as admin > Go to Settings > Users > Edit any user
2. Enter HTML payload in First Name or Last Name field:
   `<h1>INJECTED</h1>`
3. Save the user profile
4. Create or view an article — the injected HTML renders in the author name

### Fix
Replace unescaped `echo` with `htmlspecialchars()`:
```php
value="<?php echo htmlspecialchars($values['firstname'], ENT_QUOTES, 'UTF-8') ?>"
value="<?php echo htmlspecialchars($values['lastname'], ENT_QUOTES, 'UTF-8') ?>"
```
Or use the existing `$this->e()` helper already used in `editOwn.tpl.php`.

### Impact
- Stored HTML injection visible to all users viewing affected content
- Can be used for phishing, fake login forms, and UI defacement
- Affects all versions before 3.3.0

## Which versions are affected by GHSA-qrfh-cc86-vc8c?

2 open source packages ship an affected version, including leantime/leantime.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `leantime/leantime` | Packagist | All versions | 3.3.0 |
| `leantime/leantime` | Packagist | All versions | 3.3.0 |

## How do I fix GHSA-qrfh-cc86-vc8c?

Upgrade leantime/leantime to 3.3.0 or later.

## Is GHSA-qrfh-cc86-vc8c being exploited?

There is no known exploitation of GHSA-qrfh-cc86-vc8c in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for GHSA-qrfh-cc86-vc8c and fix it if it is affected.

What it is: GHSA-qrfh-cc86-vc8c is a cross-site scripting vulnerability in leantime/leantime, published on 5 Mar 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of GHSA-qrfh-cc86-vc8c in the wild and no public exploit code.

Affected packages and fixed versions:
- leantime/leantime (Packagist): affected all versions; fixed in 3.3.0
- leantime/leantime (Packagist): affected all versions; fixed in 3.3.0

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/GHSA-qrfh-cc86-vc8c/ (Markdown: https://insights.sbomify.com/GHSA-qrfh-cc86-vc8c/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GHSA-qrfh-cc86-vc8c

---
From sbomify Insights: https://insights.sbomify.com/GHSA-qrfh-cc86-vc8c/
Summaries are generated and may contain mistakes; the official description above is the record.