# CVE-2019-0746: Microsoft.ChakraCore vulnerable to Exposure of Sensitive Information to an Unauthorized Actor

> An attacker can exploit improper memory handling in the scripting engine to disclose sensitive information from Microsoft Edge and Internet Explorer.

- **Severity:** Medium 6.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N`)
- **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:** Yes
- **Published:** 8 Apr 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-jhx3-2w5x-x39x

## What is CVE-2019-0746?

CVE-2019-0746 is a medium-severity vulnerability in Microsoft Chakracore, published on 8 Apr 2019. 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

An information disclosure vulnerability exists when the scripting engine does not properly handle objects in memory in Microsoft Edge, aka 'Scripting Engine Information Disclosure Vulnerability'.

## Which versions are affected by CVE-2019-0746?

2 open source packages ship an affected version, including Microsoft.ChakraCore. It affects 3 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `Microsoft.ChakraCore` | NuGet | All versions | 1.11.7 |
| `Microsoft.ChakraCore` | NuGet | All versions | 1.11.7 |

Products: Microsoft Chakracore, Microsoft Edge, Microsoft Internet Explorer.

## How do I fix CVE-2019-0746?

Upgrade Microsoft.ChakraCore to 1.11.7 or later.

## Is CVE-2019-0746 being exploited?

There is no known exploitation of CVE-2019-0746 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Chakracore

- [CVE-2018-8298](https://insights.sbomify.com/CVE-2018-8298/): ChakraCore Scripting Engine Type Confusion (high 7.5, exploited in the wild)
- [CVE-2020-0878](https://insights.sbomify.com/CVE-2020-0878/): Microsoft Edge and Internet Explorer Memory Corruption (medium 4.2, exploited in the wild)
- [CVE-2018-8500](https://insights.sbomify.com/CVE-2018-8500/): ChakraCore RCE Vulnerability (critical 9.8)
- [CVE-2017-11767](https://insights.sbomify.com/CVE-2017-11767/): ChakraCore vulnerable to privilege escalation (critical 9.8)
- [CVE-2017-8658](https://insights.sbomify.com/CVE-2017-8658/): ChakraCore RCE Vulnerability (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-0746 and fix it if it is affected.

What it is: CVE-2019-0746 is a medium-severity vulnerability in Microsoft Chakracore, published on 8 Apr 2019. 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 CVE-2019-0746 in the wild and no public exploit code.

Affected packages and fixed versions:
- Microsoft.ChakraCore (NuGet): affected all versions; fixed in 1.11.7
- Microsoft.ChakraCore (NuGet): affected all versions; fixed in 1.11.7

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-2019-0746/ (Markdown: https://insights.sbomify.com/CVE-2019-0746/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-0746
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-0746
- OSV: https://osv.dev/vulnerability/CVE-2019-0746

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-0746/
Summaries are generated and may contain mistakes; the official description above is the record.