Vulnerability · Published May 11, 2026 · Assigned by GitHub_M
CVE-2026-42312pyload-ng: non-admin SETTINGS users can disable outbound TLS peer verification
Medium 6.8
In plain English
A medium-severity improper certificate validation in pyload from pyload. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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 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 & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | pyload-ng | 0.5.0b3.dev100 | GHSA-ccxc-x975-4hh9 |
| PyPI | pyload-ng | 0.5.0b3.dev100 | PYSEC-2026-126 |
Affected products (as reported)
Weakness: CWE-295, CWE-306, CWE-863 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
References
- https://github.com/pyload/pyload/security/advisories/GHSA-ccxc-x975-4hh9 x_refsource_CONFIRM