# CVE-2026-54254: Cyberdrop-DL: Pixeldrain API key shared with unverified thirdparty sites

> Attackers can steal Pixeldrain API keys by crafting URLs that bypass host validation, exposing credentials to malicious third-party sites.

- **Severity:** Medium 5.9 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **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:** Yes
- **Published:** 15 Sep 2026
- **Updated:** 16 Sep 2026
- **Also known as:** GHSA-f5pf-q7c7-m3vv, PYSEC-2026-3460

## What is CVE-2026-54254?

CVE-2026-54254 is a medium-severity vulnerability in cyberdrop-dl, published on 15 Sep 2026. 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

Cyberdrop-DL is a bulk asynchronous downloader for multiple file hosts. From 8.5.0 until 9.14.0, the Pixeldrain crawler uses substring host matching instead of requiring the input host to be an exact member of SUPPORTED_DOMAINS, and then reuses that input host for API requests. When a Pixeldrain API key is configured, processing a crafted URL from an attacker-controlled lookalike host causes cyberdrop_dl/crawlers/pixeldrain.py to send the Authorization header to that host. The URL may be introduced through a third-party site that can cause downloads for other sites, and the attacker receives the user's Pixeldrain API key. This issue is fixed in version 9.14.0.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor), CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2026-54254?

3 open source packages ship an affected version, including cyberdrop-dl-patched.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `cyberdrop-dl-patched` | PyPI | From 8.5.0 | 9.14.0 |
| `cyberdrop-dl-patched` | PyPI | From 8.5.0 | 9.14.0 |
| `cyberdrop-dl-patched` | PyPI | From 8.5.0 | 9.14.0 |

## How do I fix CVE-2026-54254?

Upgrade cyberdrop-dl-patched to 9.14.0 or later.

## Is CVE-2026-54254 being exploited?

There is no known exploitation of CVE-2026-54254 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-54254 and fix it if it is affected.

What it is: CVE-2026-54254 is a medium-severity vulnerability in cyberdrop-dl, published on 15 Sep 2026. 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-2026-54254 in the wild and no public exploit code.

Affected packages and fixed versions:
- cyberdrop-dl-patched (PyPI): affected from 8.5.0; fixed in 9.14.0
- cyberdrop-dl-patched (PyPI): affected from 8.5.0; fixed in 9.14.0
- cyberdrop-dl-patched (PyPI): affected from 8.5.0; fixed in 9.14.0

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-2026-54254/ (Markdown: https://insights.sbomify.com/CVE-2026-54254/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-54254
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-54254
- OSV: https://osv.dev/vulnerability/CVE-2026-54254

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-54254/
Summaries are generated and may contain mistakes; the official description above is the record.