# CVE-2024-23330: Tuta loads images from external resources

> Tuta loads external images automatically despite settings, exposing user IP and device info to senders.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Jan 2024
- **Updated:** 30 May 2025

## What is CVE-2024-23330?

CVE-2024-23330 is a medium-severity server-side request forgery vulnerability in tutao tutanota, published on 23 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Tuta is an encrypted email service. In versions prior to 119.10, an attacker can attach an image in a html mail which is loaded from external resource in the default setting, which should prevent loading of external resources. When displaying emails containing external content, they should be loaded by default only after confirmation by the user. However, it could be recognized that certain embedded images (see PoC) are loaded, even though the "Automatic Reloading of Images" function is disabled by default. The reloading is also done unencrypted via HTTP and redirections are followed. This behavior is unexpected for the user, since the user assumes that external content will only be loaded after explicit manual confirmation. The loading of external content in e-mails represents a risk, because this makes the sender aware that the e-mail address is used, when the e-mail was read, which device is used and expose the user's IP address. Version 119.10 contains a patch for this issue.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2024-23330?

It affects 1 product.


Products: Tuta Tutanota.

## How do I fix CVE-2024-23330?

No fix has been published for CVE-2024-23330 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-23330 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-23330 exists.

## Other vulnerabilities in tutao tutanota

- [CVE-2023-46116](https://insights.sbomify.com/CVE-2023-46116/): Remote Code Execution via insufficiently sanitized call to shell.openExternal (critical 9.3)
- [CVE-2024-23655](https://insights.sbomify.com/CVE-2024-23655/): Attacker can prevent users from accessing received emails (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-23330 and fix it if it is affected.

What it is: CVE-2024-23330 is a medium-severity server-side request forgery vulnerability in tutao tutanota, published on 23 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-23330 exists.

Affected product: tutao tutanota. 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-2024-23330/ (Markdown: https://insights.sbomify.com/CVE-2024-23330/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-23330
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-23330
- OSV: https://osv.dev/vulnerability/CVE-2024-23330

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-23330/
Summaries are generated and may contain mistakes; the official description above is the record.