# CVE-2026-42313: pyLoad incorrect authorization in proxy configuration settings

Source: https://junglewise.ai/threats/cve-2026-42313-pyload-incorrect-authorization-in-proxy-configuration-settings  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-11. Updated: 2026-06-08  
License: CC BY 4.0 with a link back

CVE-2026-42313 · Severity: high · CVSS 8.3 · Published 2026-05-11

pyload-ng is a download manager that automates file downloads from various websites. A vulnerability allows authenticated users with limited settings permissions to redirect all of the application's outgoing traffic through a server they control. This could lead to the theft of sensitive download credentials, session cookies, and the injection of malicious files into the download queue.

Technologies: [pyload-ng (PyPI)](https://junglewise.ai/threats/technologies/pyload-ng). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2026-42313 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-42313 being exploited in the wild.

**How severe is CVE-2026-42313?** High severity, with a CVSS score of 8.3, published 11 May 2026.

**Which products and versions are affected?** pyload-ng (PyPI) <= 0.5.0b3.dev99, ECOSYSTEM:introduced=0,fixed=0.5.0b3.dev100.

**Is there a fix for CVE-2026-42313?** Yes. pyload-ng (PyPI): upgrade to 0.5.0b3.dev100 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-42313 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-42313?** Check whether you run pyload-ng (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- pyload-ng (PyPI): upgrade to 0.5.0b3.dev100 or later

  ```sh
  pip install "pyload-ng>=0.5.0b3.dev100"
  ```


## Technical details

The `set_config_value()` API method in `src/pyload/core/api/__init__.py` uses an allowlist (`ADMIN_ONLY_CORE_OPTIONS`) to restrict sensitive configuration changes to administrators. However, this list fails to include several proxy-related settings: `proxy.enabled`, `proxy.host`, `proxy.port`, and `proxy.type`. An authenticated user with the `Perms.SETTINGS` permission can modify these values to route all outbound HTTP traffic (downloads, updates, captcha requests) through an arbitrary proxy. This enables Man-in-the-Middle (MitM) attacks, allowing the interception of auth tokens and cookies, or the injection of malicious responses. This is an incomplete fix for a series of previous vulnerabilities in the same allowlist. A patch is available in version 0.5.0b3.dev100.

## Affected products

- pyload pyload-ng <= 0.5.0b3.dev99

## Identifiers

- CVE-2026-42313
- GHSA-pg67-9wjv-mr85
- PYSEC-2026-127

## Timeline

- 2026-04-24: disclosed
- 2026-05-04: advisory: GitHub Advisory published
- 2026-05-11: other: NVD published

## References

- [https://api.github.com/users/shmulc8](https://api.github.com/users/shmulc8)
- [https://github.com/shmulc8](https://github.com/shmulc8)
- [https://api.github.com/users/shmulc8/gists%7B/gist_id%7D](https://api.github.com/users/shmulc8/gists%7B/gist_id%7D)
- [https://api.github.com/users/shmulc8/repos](https://api.github.com/users/shmulc8/repos)
- [https://avatars.githubusercontent.com/u/34924662?v=4](https://avatars.githubusercontent.com/u/34924662?v=4)
- [https://api.github.com/users/shmulc8/events%7B/privacy%7D](https://api.github.com/users/shmulc8/events%7B/privacy%7D)

## Related threats

- [pyLoad unauthenticated template access and information disclosure](https://junglewise.ai/threats/cve-2026-75597-pyload-unauthenticated-access-to-web-path-filename-bypasses)
- [pyLoad API denial of service in multipart file upload handling](https://junglewise.ai/threats/cve-2026-48484-pyload-lack-of-input-size-validation-leads-to-denial-of-service)
- [pyload-ng authentication bypass in getUserData/get_userdata](https://junglewise.ai/threats/pyload-ng-getuserdata-get-userdata-exposed-at-perms-any-allow-any-cd197c9d)
- [pyLoad rate-limit bypass and audit-log spoofing via X-Forwarded-For header](https://junglewise.ai/threats/pyload-rate-limit-bypass-and-audit-log-spoofing-via-trusted-client-0df0fd12)
- [pyLoad session invalidation bypass in privilege revocation and password change](https://junglewise.ai/threats/pyload-privilege-revocation-and-password-change-through-the-rest-api-do-8e7301ba)