PYSEC-2026-1817 pyLoad open redirect vulnerability due to improper validation of the is_safe_url function

Summary Open redirect vulnerability due to incorrect validation of input values when redirecting users after login. Details pyload is validating URLs via the getredirecturl function when redirecting users at login. The URL entered in the next variable goes through the issafeurl function, where a...

PYSEC-2026-1818 pyload Log Injection vulnerability

Summary A log injection vulnerability was identified in pyload. This vulnerability allows any unauthenticated actor to inject arbitrary messages into the logs gathered by pyload. Details pyload will generate a log entry when attempting to sign in with faulty credentials. This entry will be in the...

PYSEC-2026-1820 pyload Unauthenticated Flask Configuration Leakage vulnerability

Summary Any unauthenticated user can browse to a specific URL to expose the Flask config, including the SECRETKEY variable. Details Any unauthenticated user can browse to a specific URL to expose the Flask config, including the SECRETKEY variable. PoC Run pyload in the default configuration by...

PYSEC-2026-1819 Download to arbitrary folder can lead to RCE

Summary A web UI user can store files anywhere on the pyLoad server and gain command execution by abusing scripts. Details When a user creates a new package, a subdirectory is created within the /downloads folder to store files. This new directory name is derived from the package name, except a...

PYSEC-2026-908 Improper Input Validation in pyload-ng

Improper Input Validation in GitHub repository pyload/pyload prior to 0.5.0b3.dev40...

PYSEC-2026-903 Improper Certificate Validation in pyload-ng

Improper Certificate Validation in GitHub repository pyload/pyload prior to 0.5.0b3.dev44...

PYSEC-2026-907 Cross-site Scripting in pyload-ng

Cross-site Scripting XSS - Stored in GitHub repository pyload/pyload prior to 0.5.0b3.dev42...

PYSEC-2026-904 pyLoad vulnerable to Improper Restriction of Rendered UI Layers or Frames

Improper Restriction of Rendered UI Layers or Frames in GitHub repository pyload/pyload prior to 0.5.0b3.dev33...

PYSEC-2026-906 Pyload Insufficient Session Expiration vulnerability

Pyload 0.5.0b3.dev35 has an Insufficient Session Expiration vulnerability. A patch is available and anticipated to be part of version 0.5.0b3.dev36...

PYSEC-2026-905 Pyload contains Sensitive Cookie in HTTPS Session Without 'Secure' Attribute

Sensitive Cookie in HTTPS Session Without 'Secure' Attribute in GitHub repository pyload/pyload prior to 0.5.0b3.dev32. The Secure attribute for sensitive cookies in HTTPS sessions is not set, which could cause the user agent to send those cookies in plaintext over an HTTP session. This issue is...

PYSEC-2026-495 pyLoad: SSRF filter bypass via HTTP redirect in BaseDownloader (Incomplete fix for CVE-2026-33992)

Summary The fix for CVE-2026-33992 GHSA-m74m-f7cr-432x added IP validation to BaseDownloader.download that checks the hostname of the initial download URL. However, pycurl is configured with FOLLOWLOCATION=1 and MAXREDIRS=10, causing it to automatically follow HTTP redirects. Redirect targets are...

PYSEC-2026-497 pyLoad: Server-Side Request Forgery via Download Link Submission Enables Cloud Metadata Exfiltration

Summary PyLoad's download engine accepts arbitrary URLs without validation, enabling Server-Side Request Forgery SSRF attacks. An authenticated attacker can exploit this to access internal network services and exfiltrate cloud provider metadata. On DigitalOcean droplets, this exposes sensitive...

PYSEC-2026-498 Code Injection in pyload-ng

Code Injection in GitHub repository pyload/pyload prior to 0.5.0b3.dev31...

PYSEC-2026-494 Excessive Attack Surface in pyload-ng

Excessive Attack Surface in GitHub repository pyload/pyload prior to 0.5.0b3.dev41...

PYSEC-2026-499 pyload-ng vulnerable to RCE with js2py sandbox escape

Summary Any pyload-ng running under python3.11 or below are vulnerable under RCE. Attacker can send a request containing any shell command and the victim server will execute it immediately. Details js2py has a vulnerability of sandbox escape assigned as CVE-2024-28397, which is used by the...

PYSEC-2026-493 pyLoad CNL Blueprint allows Path Traversal through `dlc_path` which leads to Remote Code Execution (RCE)

Summary Path Traversal in pyLoad-ng CNL Blueprint via package parameter allows Arbitrary File Write leading to Remote Code Execution RCE The addcrypted endpoint in pyload-ng suffers from an unsafe path construction vulnerability, allowing unauthenticated attackers to write arbitrary files outside...

PYSEC-2026-496 pyLoad vulnerable to XSS through insecure CAPTCHA

Summary An unsafe JavaScript evaluation vulnerability in pyLoad’s CAPTCHA processing code allows unauthenticated remote attackers to execute arbitrary code in the client browser and potentially the backend server. Exploitation requires no user interaction or authentication and can result in sessi...

pyLoad vulnerable to XSS through insecure CAPTCHA

SummaryAn unsafe JavaScript evaluation vulnerability in pyLoad’s CAPTCHA processing code allows unauthenticated remote attackers to execute arbitrary code in the client browser and potentially the backend server. Exploitation requires no user interaction or authentication and can result in sessio...

CVE-2026-45306

pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev100, the fix for CVE-2026-33509 prevents setting storagefolder inside PKGDIR or userdir, but does NOT protect the Flask session directory /tmp/pyLoad/flask. An authenticated attacker can set storagefolder to...

CVE-2026-42314

pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev100, package folder names are sanitized using insufficient string replacement. The pattern ....// becomes .. after replacement partial removal, leaving .. which can be exploited when the path is later resolve...