# 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.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **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:** 28 Mar 2025
- **Updated:** 1 Apr 2025
- **Also known as:** GHSA-95j3-435g-vjcp

## 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 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2025-28254?

2 open source packages ship an affected version, including leantime/leantime. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `leantime/leantime` | Packagist | All versions | 3.3 |
| `leantime/leantime` | Packagist | All versions | 3.3 |

Products: Leantime Leantime.

## How do I fix CVE-2025-28254?

Upgrade leantime/leantime to 3.3 or later.

## 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

- [CVE-2023-33961](https://insights.sbomify.com/CVE-2023-33961/): Leantime Stored Cross-site Scripting Vulnerability (high 8.9)
- [CVE-2024-27474](https://insights.sbomify.com/CVE-2024-27474/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2020-5292](https://insights.sbomify.com/CVE-2020-5292/): Time-based blind injection in Leantime (high 8.7)
- [CVE-2024-27705](https://insights.sbomify.com/CVE-2024-27705/): Cross-site scripting in n/a (high 7.6)
- [CVE-2023-45826](https://insights.sbomify.com/CVE-2023-45826/): Authenticated SQL Injection in leantime (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-28254 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2025-28254 in the wild and no public exploit code.

Affected packages and fixed versions:
- leantime/leantime (Packagist): affected all versions; fixed in 3.3
- leantime/leantime (Packagist): affected all versions; fixed in 3.3

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/CVE-2025-28254/ (Markdown: https://insights.sbomify.com/CVE-2025-28254/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-28254
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-28254
- OSV: https://osv.dev/vulnerability/CVE-2025-28254

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-28254/
Summaries are generated and may contain mistakes; the official description above is the record.