# CVE-2018-5753: Other in n/a

> Remote attackers can spoof email origins using unicode characters in sender addresses, bypassing email authentication checks in Open-Xchange OX App Suite.

- **Severity:** Medium 6.5 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Jun 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-8rfv-4356-35qw

## What is CVE-2018-5753?

CVE-2018-5753 is a medium-severity vulnerability in Open-Xchange Open-Xchange Appsuite, published on 15 Jun 2018. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The frontend component in Open-Xchange OX App Suite before 7.6.3-rev31, 7.8.x before 7.8.2-rev31, 7.8.3 before 7.8.3-rev41, and 7.8.4 before 7.8.4-rev20 allows remote attackers to spoof the origin of e-mails via unicode characters in the "personal part" of a (1) From or (2) Sender address.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2018-5753?

It affects 1 product.


Products: Open-Xchange Open-Xchange Appsuite.

## How do I fix CVE-2018-5753?

No fix has been published for CVE-2018-5753 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-5753 being exploited?

There is no known exploitation of CVE-2018-5753 in the wild and no public exploit code.

Public exploit code:

- OX App Suite 7.8.4 - Multiple Vulnerabilities (exploitdb)
- OX App Suite 7.8.4 - Multiple Vulnerabilities (exploitdb)

## Other vulnerabilities in Open-Xchange Open-Xchange Appsuite

- [CVE-2017-13667](https://insights.sbomify.com/CVE-2017-13667/): Server-side request forgery in n/a (critical 9.9)
- [CVE-2020-12645](https://insights.sbomify.com/CVE-2020-12645/): Denial of service in n/a (critical 9.8)
- [CVE-2019-7158](https://insights.sbomify.com/CVE-2019-7158/): Missing authorization in n/a (critical 9.8)
- [CVE-2017-17060](https://insights.sbomify.com/CVE-2017-17060/): Misconfiguration in n/a (critical 9.8)
- [CVE-2017-5210](https://insights.sbomify.com/CVE-2017-5210/): Information disclosure in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-5753 and fix it if it is affected.

What it is: CVE-2018-5753 is a medium-severity vulnerability in Open-Xchange Open-Xchange Appsuite, published on 15 Jun 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-5753 in the wild and no public exploit code.

Affected product: Open-Xchange Open-Xchange Appsuite. 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-2018-5753/ (Markdown: https://insights.sbomify.com/CVE-2018-5753/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-5753
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-5753
- OSV: https://osv.dev/vulnerability/CVE-2018-5753

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-5753/
Summaries are generated and may contain mistakes; the official description above is the record.