CVE-2026-42312
pyload-ng: non-admin SETTINGS users can disable outbound TLS peer verification via unrestricted `ssl_verify` config (incomplete fix for CVE-2026-33509 / -35463 / -35464 / -35586)
Impact
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 option ("general", "ssl_verify") is not on that allowlist. Any authenticated user with the non-admin SETTINGS permission can set general.ssl_verify = off, and every subsequent outbound pycurl request is made with SSL_VERIFYPEER=0 and SSL_VERIFYHOST=0 — TLS peer and hostname verification are fully disabled. An on-path attacker can then present forged certificates for any hostname pyload fetches. 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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | pyload-ng | <= 0.5.0b3.dev99 | 0.5.0b3.dev100 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Pyload-Ng Project | Pyload-Ng | before 0.5.0b3.dev100 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-ccxc-x975-4hh9
- https://github.com/pyload/pyload/security/advisories/GHSA-ccxc-x975-4hh9
- 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://nvd.nist.gov/vuln/detail/CVE-2026-42312
- https://github.com/pypa/advisory-database/tree/main/vulns/pyload-ng/PYSEC-2026-126.yaml