# CVE-2021-4280: styler_praat_scripts Slash file_segmenter.praat denial of service

> Remote attackers can cause a denial of service in styler_praat_scripts via the file_segmenter.praat slash handler.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/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:** 25 Dec 2022
- **Updated:** 14 Apr 2025
- **Also known as:** GHSA-phr5-vvrc-h6fp

## What is CVE-2021-4280?

CVE-2021-4280 is a medium-severity denial of service vulnerability in styler_praat_scripts, published on 25 Dec 2022. 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

A vulnerability was found in styler_praat_scripts. It has been classified as problematic. Affected is an unknown function of the file file_segmenter.praat of the component Slash Handler. The manipulation leads to denial of service. It is possible to launch the attack remotely. The name of the patch is 0cad44aa4a3eb0ecdba071c10eaff16023d8b35f. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-216780.

Weakness: CWE-404 (Improper Resource Shutdown or Release)

## Which versions are affected by CVE-2021-4280?

It affects 1 product.


Products: Styler Praat Scripts Project Styler Praat Scripts.

## How do I fix CVE-2021-4280?

No fix has been published for CVE-2021-4280 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-4280 being exploited?

There is no known exploitation of CVE-2021-4280 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-4280 and fix it if it is affected.

What it is: CVE-2021-4280 is a medium-severity denial of service vulnerability in styler_praat_scripts, published on 25 Dec 2022. 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-2021-4280 in the wild and no public exploit code.

Affected product: styler_praat_scripts. 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-2021-4280/ (Markdown: https://insights.sbomify.com/CVE-2021-4280/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-4280
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-4280
- OSV: https://osv.dev/vulnerability/CVE-2021-4280

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-4280/
Summaries are generated and may contain mistakes; the official description above is the record.