# CVE-2023-49077: mailcow-dockerized XSS Vulnerability in Quarantine UI Allows Unauthorized Access and Data Manipulation

> Attackers can inject malicious JavaScript via crafted emails in the Quarantine UI, potentially compromising administrator accounts and data.

- **Severity:** High 8.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L`)
- **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:** 30 Nov 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-46x4-w2fm-5x6g

## What is CVE-2023-49077?

CVE-2023-49077 is a high-severity cross-site scripting vulnerability in mailcow-dockerized, published on 30 Nov 2023. 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

Mailcow: dockerized is an open source groupware/email suite based on docker. A Cross-Site Scripting (XSS) vulnerability has been identified within the Quarantine UI of the system. This vulnerability poses a significant threat to administrators who utilize the Quarantine feature. An attacker can send a carefully crafted email containing malicious JavaScript code. This issue has been patched in version 2023-11.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2023-49077?

It affects 1 product.


Products: Mailcow Mailcow\.

## How do I fix CVE-2023-49077?

No fix has been published for CVE-2023-49077 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-49077 being exploited?

There is no known exploitation of CVE-2023-49077 in the wild and no public exploit code.

## Other vulnerabilities in mailcow-dockerized

- [CVE-2025-53909](https://insights.sbomify.com/CVE-2025-53909/): mailcow: dockerized vulnerable to SSTI in Quota and Quarantine Notification Template (critical 9.1)
- [CVE-2024-24760](https://insights.sbomify.com/CVE-2024-24760/): Mailcow Docker Container Exposure to Local Network (high 8.8)
- [CVE-2023-34108](https://insights.sbomify.com/CVE-2023-34108/): Manipulation of Internal Dovecot Variables in mailcow via crafted Passwords (high 8.8)
- [CVE-2022-31138](https://insights.sbomify.com/CVE-2022-31138/): OS Command Injection in mailcow (high 8.8)
- [CVE-2022-31245](https://insights.sbomify.com/CVE-2022-31245/): Command injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-49077 and fix it if it is affected.

What it is: CVE-2023-49077 is a high-severity cross-site scripting vulnerability in mailcow-dockerized, published on 30 Nov 2023. 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-2023-49077 in the wild and no public exploit code.

Affected product: mailcow-dockerized. 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-2023-49077/ (Markdown: https://insights.sbomify.com/CVE-2023-49077/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-49077
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-49077
- OSV: https://osv.dev/vulnerability/CVE-2023-49077

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-49077/
Summaries are generated and may contain mistakes; the official description above is the record.