# CVE-2024-24975: Denial of Service for mobile app users due to automatic code highlighting

> An attacker can crash the Mattermost mobile app by sending excessively large code blocks, causing uncontrolled resource consumption.

- **Severity:** Low 3.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 15 Mar 2024
- **Updated:** 1 Aug 2024
- **Also known as:** GHSA-8jjg-p984-x7q6

## What is CVE-2024-24975?

CVE-2024-24975 is a low-severity denial of service vulnerability in Mattermost Mobile, published on 15 Mar 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Uncontrolled Resource Consumption in Mattermost Mobile versions before 2.13.0 fails to limit the size of the code block that will be processed by the syntax highlighter, allowing an attacker to send a very large code block and crash the mobile app.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2024-24975?

It affects 1 product.


Products: Mattermost Mattermost Mobile.

## How do I fix CVE-2024-24975?

No fix has been published for CVE-2024-24975 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-24975 being exploited?

There is no known exploitation of CVE-2024-24975 in the wild and no public exploit code.

## Other vulnerabilities in Mattermost Mobile

- [CVE-2019-20848](https://insights.sbomify.com/CVE-2019-20848/): Other in n/a (high 7.5)
- [CVE-2019-20852](https://insights.sbomify.com/CVE-2019-20852/): Information disclosure in n/a (high 7.5)
- [CVE-2020-14449](https://insights.sbomify.com/CVE-2020-14449/): Information disclosure in n/a (high 7.5)
- [CVE-2020-14451](https://insights.sbomify.com/CVE-2020-14451/): Information disclosure in n/a (high 7.5)
- [CVE-2025-1558](https://insights.sbomify.com/CVE-2025-1558/): Denial of Service Via Malicious GIF (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-24975 and fix it if it is affected.

What it is: CVE-2024-24975 is a low-severity denial of service vulnerability in Mattermost Mobile, published on 15 Mar 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2024-24975 in the wild and no public exploit code.

Affected product: Mattermost Mobile. 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-2024-24975/ (Markdown: https://insights.sbomify.com/CVE-2024-24975/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-24975
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-24975
- OSV: https://osv.dev/vulnerability/CVE-2024-24975

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-24975/
Summaries are generated and may contain mistakes; the official description above is the record.