# CVE-2016-7831: Open redirect in Sleipnir 4 Black Edition for Mac

> Remote attackers can spoof URL displays in Sleipnir for Mac via crafted webpages, potentially misleading users about the site's identity.

- **Severity:** Medium 6.1 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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:** 9 Jun 2017
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-g547-2jpp-gw38

## What is CVE-2016-7831?

CVE-2016-7831 is a medium-severity vulnerability in Fenrir Inc. Sleipnir 4 Black Edition for Mac, published on 9 Jun 2017. 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

Sleipnir 4 Black Edition for Mac 4.5.3 and earlier and Sleipnir 4 for Mac 4.5.3 and earlier (Mac App Store) may allow a remote attacker to spoof the URL display via a specially crafted webpage.

Weakness: CWE-601 (URL Redirection to Untrusted Site)

## Which versions are affected by CVE-2016-7831?

It affects 1 product.


Products: Fenrir-Inc Sleipnir.

## How do I fix CVE-2016-7831?

No fix has been published for CVE-2016-7831 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-7831 being exploited?

There is no known exploitation of CVE-2016-7831 in the wild and no public exploit code.

## Other vulnerabilities in Fenrir Inc. Sleipnir 4 Black Edition for Mac

- [CVE-2010-3918](https://insights.sbomify.com/CVE-2010-3918/): Other in n/a (medium 5.8)
- [CVE-2013-2303](https://insights.sbomify.com/CVE-2013-2303/): Security feature bypass in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-7831 and fix it if it is affected.

What it is: CVE-2016-7831 is a medium-severity vulnerability in Fenrir Inc. Sleipnir 4 Black Edition for Mac, published on 9 Jun 2017. 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-2016-7831 in the wild and no public exploit code.

Affected product: Fenrir Inc. Sleipnir 4 Black Edition for Mac. 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-2016-7831/ (Markdown: https://insights.sbomify.com/CVE-2016-7831/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-7831
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-7831
- OSV: https://osv.dev/vulnerability/CVE-2016-7831

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-7831/
Summaries are generated and may contain mistakes; the official description above is the record.