# CVE-2023-1003: Typora WSH JScript code injection

> A local attacker can inject JScript code into Typora via the WSH handler, leading to arbitrary code execution on Windows systems.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Feb 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-mwwq-j3h6-hjc2

## What is CVE-2023-1003?

CVE-2023-1003 is a medium-severity code injection vulnerability in Typora, published on 24 Feb 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability, which was classified as critical, was found in Typora up to 1.5.5 on Windows. Affected is an unknown function of the component WSH JScript Handler. The manipulation leads to code injection. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. Upgrading to version 1.5.8 is able to address this issue. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-221736.

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2023-1003?

It affects 1 product.


Products: Typora Typora.

## How do I fix CVE-2023-1003?

No fix has been published for CVE-2023-1003 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-1003 being exploited?

There is no known exploitation of CVE-2023-1003 in the wild and no public exploit code.

## Other vulnerabilities in Typora

- [CVE-2023-2317](https://insights.sbomify.com/CVE-2023-2317/): Typora DOM-Based Cross-site Scripting leading to Remote Code Execution (high 8.6)
- [CVE-2019-20374](https://insights.sbomify.com/CVE-2019-20374/): Cross-site scripting in n/a (high 8.3)
- [CVE-2019-12172](https://insights.sbomify.com/CVE-2019-12172/): Path traversal in n/a (high 7.8)
- [CVE-2019-12137](https://insights.sbomify.com/CVE-2019-12137/): Path traversal in n/a (high 7.8)
- [CVE-2020-18336](https://insights.sbomify.com/CVE-2020-18336/): Cross-site scripting in n/a (high 7.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-1003 and fix it if it is affected.

What it is: CVE-2023-1003 is a medium-severity code injection vulnerability in Typora, published on 24 Feb 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-1003 in the wild and no public exploit code.

Affected product: Typora. 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-2023-1003/ (Markdown: https://insights.sbomify.com/CVE-2023-1003/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-1003
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-1003
- OSV: https://osv.dev/vulnerability/CVE-2023-1003

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-1003/
Summaries are generated and may contain mistakes; the official description above is the record.