# CVE-2016-7967: Code injection in n/a

> KMail's HTML viewer enabled JavaScript in a local file context, allowing attackers to execute arbitrary code or access local files via crafted emails.

- **Severity:** High 8.1 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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:** No
- **Published:** 23 Dec 2016
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-99pq-r374-7jh3

## What is CVE-2016-7967?

CVE-2016-7967 is a high-severity code injection vulnerability in n/a, published on 23 Dec 2016. 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

KMail since version 5.3.0 used a QWebEngine based viewer that had JavaScript enabled. Since the generated html is executed in the local file security context by default access to remote and local URLs was enabled.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2016-7967?

It affects 1 product.


Products: Kde Kmail.

## How do I fix CVE-2016-7967?

No fix has been published for CVE-2016-7967 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-7967 being exploited?

There is no known exploitation of CVE-2016-7967 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2017-9604](https://insights.sbomify.com/CVE-2017-9604/): Information disclosure in n/a (high 7.5)
- [CVE-2020-11880](https://insights.sbomify.com/CVE-2020-11880/): Path traversal in n/a (medium 6.5)
- [CVE-2016-7968](https://insights.sbomify.com/CVE-2016-7968/): Cross-site scripting in n/a (medium 6.5)
- [CVE-2014-8878](https://insights.sbomify.com/CVE-2014-8878/): Weak cryptography in n/a (medium 5.9)
- [CVE-2021-38373](https://insights.sbomify.com/CVE-2021-38373/): Security feature bypass in n/a (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-7967 and fix it if it is affected.

What it is: CVE-2016-7967 is a high-severity code injection vulnerability in n/a, published on 23 Dec 2016. 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-2016-7967 in the wild and no public exploit code.

Affected product: n/a. 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-2016-7967/ (Markdown: https://insights.sbomify.com/CVE-2016-7967/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-7967
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-7967
- OSV: https://osv.dev/vulnerability/CVE-2016-7967

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-7967/
Summaries are generated and may contain mistakes; the official description above is the record.