# CVE-2026-35187: pyLoad SSRF and local file disclosure in parse_urls API

Source: https://junglewise.ai/threats/cve-2026-35187-pyload-ssrf-and-local-file-disclosure-in-parse-urls-api  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-06. Updated: 2026-07-24  
License: CC BY 4.0 with a link back

CVE-2026-35187 · Severity: high · CVSS 7.7 · Published 2026-04-06

pyLoad is an open-source download manager used to automate file downloads from various hosting sites. A security flaw allows an authenticated user with basic permissions to force the server to make unauthorized requests to internal network resources or read sensitive local files. This could lead to the exposure of internal credentials, cloud metadata, or configuration files, potentially allowing an attacker to gain deeper access to the hosting environment.

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

## Quick answers

**Is CVE-2026-35187 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-35187 being exploited in the wild.

**How severe is CVE-2026-35187?** High severity, with a CVSS score of 7.7, published 6 April 2026.

**Which products and versions are affected?** pyload-ng (PyPI) ECOSYSTEM:introduced=0,last_affected=0.5.0b3.dev96.

**Is there a fix for CVE-2026-35187?** A patch was published on 2026-04-06: Fix committed to repository Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-35187 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-35187?** 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.

## Technical details

A Server-Side Request Forgery (SSRF) vulnerability exists in the `parse_urls` API endpoint of pyLoad due to insufficient validation of the `url` parameter. The application uses `pycurl` to fetch the provided URL without enforcing protocol restrictions or IP blacklists. An authenticated attacker with 'ADD' permissions can exploit this to perform internal port scanning, access cloud metadata services (e.g., AWS/GCP endpoints), and interact with internal services like Redis or Memcached via `gopher://` or `dict://` protocols. Furthermore, the `file://` protocol can be used to read local system files or perform file existence enumeration via error-based side channels. The vulnerability is addressed in version 0.5.0b3.dev97 by implementing protocol and IP address validation.

## Affected products

- pyload pyload-ng <= 0.5.0b3.dev96

## Identifiers

- CVE-2026-35187
- GHSA-2wvg-62qm-gj33
- PYSEC-2026-2988

## Timeline

- 2026-04-01: advisory: GitHub Security Advisory published
- 2026-04-06: disclosed: CVE published to NVD
- 2026-04-06: patched: Fix committed to repository

## References

- [https://github.com/pyload/pyload/commit/4032e57d61d8f864e39f4dcfdb567527a50a9e1f](https://github.com/pyload/pyload/commit/4032e57d61d8f864e39f4dcfdb567527a50a9e1f)
- [https://github.com/pyload/pyload/security/advisories/GHSA-2wvg-62qm-gj33](https://github.com/pyload/pyload/security/advisories/GHSA-2wvg-62qm-gj33)

## 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)