CVE-2025-28254 Leantime affected by Improper Neutralization of HTML Tags
An authenticated attacker can execute arbitrary code and access sensitive information via a stored XSS vulnerability in the first name field.
- 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
What is CVE-2025-28254?
CVE-2025-28254 is a medium-severity cross-site scripting vulnerability in n/a, published on 28 Mar 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Cross Site Scripting vulnerability in Leantime v3.2.1 and before allows an authenticated attacker to execute arbitrary code and obtain sensitive information via the first name field in processMentions().
Weakness: CWE-79
Which versions are affected by CVE-2025-28254?
2 open source packages ship an affected version, including leantime/leantime. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
leantime/leantime Packagist | All versions | 3.3 |
leantime/leantime Packagist | All versions | 3.3 |
Products include Leantime Leantime.
How do I fix CVE-2025-28254?
Upgrade leantime/leantime to 3.3 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-28254 being exploited?
There is no known exploitation of CVE-2025-28254 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-95j3-435g-vjcp.