# GHSA-w6xj-45gv-fw35: Malicious Package in stream-combine

> A malicious npm package steals credentials and credit card data from web forms, requiring users to remove the package and rotate secrets.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 2 Sep 2020

## What is GHSA-w6xj-45gv-fw35?

GHSA-w6xj-45gv-fw35 is a vulnerability in stream-combine, published on 2 Sep 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Version 2.0.2 of `stream-combine` has malicious code design to steal credentials and credit card information. The code searches all form elements for passwords, credit card numbers and CVC codes. It then uploads the information to a remote server using HTML links embedded in the page or form actions. If your application has Content Security Policy set you are not affected by this issue.

## Recommendation

This package is not available on the npm Registry anymore. If you used this module and your application processed credentials or credit card information, it is possible that information was stolen.

Users may consider downgrading to version 2.0.1

## Which versions are affected by GHSA-w6xj-45gv-fw35?

2 open source packages ship an affected version, including stream-combine.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `stream-combine` | npm | All versions | None |
| `stream-combine` | npm | All versions | None |

## How do I fix GHSA-w6xj-45gv-fw35?

No fix has been published for GHSA-w6xj-45gv-fw35 yet. Limit exposure of the affected software until one is available.

## Is GHSA-w6xj-45gv-fw35 being exploited?

There is no known exploitation of GHSA-w6xj-45gv-fw35 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for GHSA-w6xj-45gv-fw35 and fix it if it is affected.

What it is: GHSA-w6xj-45gv-fw35 is a vulnerability in stream-combine, published on 2 Sep 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of GHSA-w6xj-45gv-fw35 in the wild and no public exploit code.

Affected packages and fixed versions:
- stream-combine (npm): affected all versions; no fix listed
- stream-combine (npm): affected all versions; no fix listed

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-w6xj-45gv-fw35/ (Markdown: https://insights.sbomify.com/GHSA-w6xj-45gv-fw35/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GHSA-w6xj-45gv-fw35

---
From sbomify Insights: https://insights.sbomify.com/GHSA-w6xj-45gv-fw35/
Summaries are generated and may contain mistakes; the official description above is the record.