CVE-2026-35463
published 2026-04-07CVE-2026-35463: pyLoad is a free and open-source download manager written in Python. In 0.5.0b3.dev96 and earlier, the ADMIN_ONLY_OPTIONS protection mechanism restricts…
PriorityP262high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
0.81%
52.5th percentile
pyLoad is a free and open-source download manager written in Python. In 0.5.0b3.dev96 and earlier, the ADMIN_ONLY_OPTIONS protection mechanism restricts security-critical configuration values (reconnect scripts, SSL certs, proxy credentials) to admin-only access. However, this protection is only applied to core config options, not to plugin config options. The AntiVirus plugin stores an executable path (avfile) in its config, which is passed directly to subprocess.Popen(). A non-admin user with SETTINGS permission can change this path to achieve remote code execution.
Affected
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| pyload-ng_project | pyload-ng | < 0.5.0b3.dev100 | 0.5.0b3.dev100 |
| pyload-ng_project | pyload-ng | <= 0.5.0b3.dev96 | — |
| pyload-ng_project | pyload-ng | >= 0 < 0.5.0b3.dev100 | 0.5.0b3.dev100 |
| pyload-ng_project | pyload-ng | 0 – 0.5.0b3.dev96 | — |
| pyload | pyload | <= 0.5.0b3.dev96 | — |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
ghsa8.8HIGH
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GHSA
pyload-ng: non-admin SETTINGS users can redirect all outbound traffic through an attacker-controlled proxy via unrestricted `proxy.*` config (incomplete fix for CVE-2026-33509 / -35463 / -35464 / -355
ghsa·2026-05-04·CVSS 8.8
CVE-2026-42313 [HIGH] CWE-441 pyload-ng: non-admin SETTINGS users can redirect all outbound traffic through an attacker-controlled proxy via unrestricted `proxy.*` config (incomplete fix for CVE-2026-33509 / -35463 / -35464 / -355
pyload-ng: non-admin SETTINGS users can redirect all outbound traffic through an attacker-controlled proxy via unrestricted `proxy.*` config (incomplete fix for CVE-2026-33509 / -35463 / -35464 / -35586)
### Summary
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
GHSA
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)
ghsa·2026-05-04·CVSS 8.8
CVE-2026-42312 [HIGH] CWE-295 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)
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)
### Summary
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
GHSA
pyLoad: Improper Neutralization of Special Elements used in an OS Command
ghsa·2026-04-04
CVE-2026-35463 [HIGH] CWE-78 pyLoad: Improper Neutralization of Special Elements used in an OS Command
pyLoad: Improper Neutralization of Special Elements used in an OS Command
### Summary
The `ADMIN_ONLY_OPTIONS` protection mechanism restricts security-critical configuration values (reconnect scripts, SSL certs, proxy credentials) to admin-only access. However, this protection is **only applied to core config options**, not to plugin config options. The `AntiVirus` plugin stores an executable path (`avfile`) in its config, which is passed directly to `subprocess.Popen()`. A non-admin user with SETTINGS permission can change this path to achieve remote code execution.
### Details
**Safe wrapper — `ADMIN_ONLY_OPTIONS` (core/api/__init__.py:225-235):**
```python
ADMIN_ONLY_OPTIONS = {
"reconnect.script", # Blocks script path change
"webui.host", # Blocks bind address change
"ssl.cert_fil
OSV
pyLoad: Improper Neutralization of Special Elements used in an OS Command
osv·2026-04-04
CVE-2026-35463 [HIGH] pyLoad: Improper Neutralization of Special Elements used in an OS Command
pyLoad: Improper Neutralization of Special Elements used in an OS Command
### Summary
The `ADMIN_ONLY_OPTIONS` protection mechanism restricts security-critical configuration values (reconnect scripts, SSL certs, proxy credentials) to admin-only access. However, this protection is **only applied to core config options**, not to plugin config options. The `AntiVirus` plugin stores an executable path (`avfile`) in its config, which is passed directly to `subprocess.Popen()`. A non-admin user with SETTINGS permission can change this path to achieve remote code execution.
### Details
**Safe wrapper — `ADMIN_ONLY_OPTIONS` (core/api/__init__.py:225-235):**
```python
ADMIN_ONLY_OPTIONS = {
"reconnect.script", # Blocks script path change
"webui.host", # Blocks bind address change
"ssl.cert_fil
No detection rules found.
No public exploits indexed.
2026-04-07
Published