# CVE-2026-38361: Denial of service in n/a

> Unauthenticated attackers can cause out-of-memory crashes, file truncation, and disk exhaustion in dash-uploader by manipulating upload parameters.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 8 May 2026
- **Updated:** 10 Jun 2026
- **Also known as:** GHSA-xp7f-v245-w3w8, PYSEC-2026-37

## What is CVE-2026-38361?

CVE-2026-38361 is a high-severity denial of service vulnerability in n/a, published on 8 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Multiple unauthenticated denial-of-service (DoS) issues in fohrloop dash-uploader v0.1.0 through v0.7.0a2. The chunked-upload handler (dash_uploader/httprequesthandler.py, dash_uploader/upload.py) trusts unsanitized, attacker-controlled upload parameters (e.g. flowTotalChunks) and does not enforce the documented max_file_size limit, allowing a remote, unauthenticated attacker to cause an out-of-memory (OOM) process crash (unbounded range(1, flowTotalChunks + 1) allocation), truncation of the target file to zero bytes (flowTotalChunks=0, where the all([]) == True quirk runs the file-assembly branch on zero chunks), permanent disk exhaustion (never-cleaned-up temporary directories per flowIdentifier), and a complete bypass of the documented max_file_size limit.

Weakness: CWE-670 (Always-Incorrect Control Flow Implementation), CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2026-38361?

1 open source package ship an affected version, including dash-uploader. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `dash-uploader` | PyPI | From 0.1.0 | 0.7.0a1 |

Products: Fohrloop Dash-Uploader.

## How do I fix CVE-2026-38361?

Upgrade dash-uploader to 0.7.0a1 or later.

## Is CVE-2026-38361 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-38361 exists.

Public exploit code:

- Advisory: CVE-2026-38361 multiple DoS vulnerabilities (CWE-400/CWE-670) in dash-uploader (Python/PyPI) (github_poc): https://github.com/a1ohadance/CVE-2026-38361
- dash-uploader 0.1.0 - 0.7.0a2 - Denial-of-Service via flowTotalChunks (nuclei): http/cves/2026/CVE-2026-38361.yaml

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-38361 and fix it if it is affected.

What it is: CVE-2026-38361 is a high-severity denial of service vulnerability in n/a, published on 8 May 2026. 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-2026-38361 exists.

Affected packages and fixed versions:
- dash-uploader (PyPI): affected from 0.1.0; fixed in 0.7.0a1

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-2026-38361/ (Markdown: https://insights.sbomify.com/CVE-2026-38361/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-38361
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-38361
- OSV: https://osv.dev/vulnerability/CVE-2026-38361

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-38361/
Summaries are generated and may contain mistakes; the official description above is the record.