# CVE-2025-41349: Stored Cross-Site Scripting (XSS) in WinPlus by Informática del Este

> Stored XSS in WinPlus allows attackers to steal session cookies from authenticated users via the 'descripcion' parameter.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA: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:** No
- **Published:** 18 Nov 2025
- **Updated:** 18 Feb 2026
- **Also known as:** GHSA-jmmc-fjvq-35v4

## What is CVE-2025-41349?

CVE-2025-41349 is a medium-severity cross-site scripting vulnerability in Informatica del Este WinPlus, published on 18 Nov 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

Stored Cross-site Scripting (XSS)vylnerability type in WinPlus v24.11.27 byInformática del Este that consist of an stored XSS of a stored XSS due to a lack of proper validation of user input by sending a POST request using the 'descripcion' parameter in '/WinplusPortal/ws/sWinplus. svc/json/savesolpla_post'. This vulnerability could allow a remote user to send a specially crafted query to an authenticated user and steal their cookie session details.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2025-41349?

It affects 1 product.


Products: Iest Winplus.

## How do I fix CVE-2025-41349?

No fix has been published for CVE-2025-41349 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-41349 being exploited?

There is no known exploitation of CVE-2025-41349 in the wild and no public exploit code.

## Other vulnerabilities in Informatica del Este WinPlus

- [CVE-2025-41346](https://insights.sbomify.com/CVE-2025-41346/): Stored Cross-Site Scripting (XSS) in WinPlus by Informática del Este (critical 9.3)
- [CVE-2025-41347](https://insights.sbomify.com/CVE-2025-41347/): Stored Cross-Site Scripting (XSS) in WinPlus by Informática del Este (high 8.7)
- [CVE-2025-41348](https://insights.sbomify.com/CVE-2025-41348/): Stored Cross-Site Scripting (XSS) in WinPlus by Informática del Este (high 8.7)
- [CVE-2025-41350](https://insights.sbomify.com/CVE-2025-41350/): Stored Cross-Site Scripting (XSS) in WinPlus by Informática del Este (medium 5.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-41349 and fix it if it is affected.

What it is: CVE-2025-41349 is a medium-severity cross-site scripting vulnerability in Informatica del Este WinPlus, published on 18 Nov 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-2025-41349 in the wild and no public exploit code.

Affected product: Informatica del Este WinPlus. No package-level version data is available, so check the vendor advisory linked from the reference page.

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-2025-41349/ (Markdown: https://insights.sbomify.com/CVE-2025-41349/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-41349
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-41349
- OSV: https://osv.dev/vulnerability/CVE-2025-41349

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-41349/
Summaries are generated and may contain mistakes; the official description above is the record.