CVE-2026-42313
Description
pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev100, the set_config_value() API method (@permission(Perms.SETTINGS)) in src/pyload/core/api/__init__.py gates security-sensitive options behind a hand-maintained allowlist ADMIN_ONLY_CORE_OPTIONS. The allowlist contains ("proxy", "username") and ("proxy", "password") — which protect the proxy credentials — but it does not include ("proxy", "enabled"), ("proxy", "host"), ("proxy", "port"), or ("proxy", "type"). Any authenticated user with the non-admin SETTINGS permission can enable proxying and point pyload at any host they control. From that point, every outbound download, captcha fetch, update check, and plugin HTTP call is transparently routed through the attacker. This is a direct continuation of the fix family CVE-2026-33509 / CVE-2026-35463 / CVE-2026-35464 / CVE-2026-35586, each of which patched a different missed option in the same allowlist. This vulnerability is fixed in 0.5.0b3.dev100.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| pyload-ng_project | pyload-ng | {"endExcluding":"0.5.0b3.dev100"} | 0.5.0b3.dev100 |
References
- https://github.com/pyload/pyload/security/advisories/GHSA-pg67-9wjv-mr85
- https://nvd.nist.gov/vuln/detail/CVE-2026-42313
- https://github.com/advisories/GHSA-4744-96p5-mp2j
- https://github.com/advisories/GHSA-ppvx-rwh9-7rj7
- https://github.com/advisories/GHSA-r7mc-x6x7-cqxx
- https://github.com/advisories/GHSA-w48f-wwwf-f5fr
- https://github.com/pyload/pyload
- https://github.com/advisories/GHSA-pg67-9wjv-mr85
CWEs
CWE-441 CWE-863 CWE-918
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.