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40 vulnerabilities found for pyload-ng by pyload-ng_project

CVE-2026-42315 (GCVE-0-2026-42315)

Vulnerability from nvd – Published: 2026-05-11 16:35 – Updated: 2026-05-11 20:16
VLAI?
Title
pyLoad: Path Traversal via Package Folder Name in set_package_data
Summary
pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev100, when passing a folder name in the set_package_data() API function call inside the data object with key "_folder", there is no sanitization at all, allowing a user with Perms.MODIFY to specify arbitrary directories as download locations for a package. This vulnerability is fixed in 0.5.0b3.dev100.
Severity ?
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  • CWE-36 - Absolute Path Traversal
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: < 0.5.0b3.dev100
Create a notification for this product.
Show details on NVD website
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CVE-2026-42314 (GCVE-0-2026-42314)

Vulnerability from nvd – Published: 2026-05-11 16:34 – Updated: 2026-05-11 18:33
VLAI?
Title
pyLoad: Path Traversal via Package Folder Name
Summary
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 resolved by the OS. This vulnerability is fixed in 0.5.0b3.dev100.
Severity ?
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: < 0.5.0b3.dev100
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-42313 (GCVE-0-2026-42313)

Vulnerability from nvd – Published: 2026-05-11 16:30 – Updated: 2026-05-12 13:51
VLAI?
Title
pyload-ng: non-admin SETTINGS users can redirect all outbound traffic through an attacker-controlled proxy
Summary
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.
Severity ?
8.3 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
CWE
  • CWE-441 - Unintended Proxy or Intermediary ('Confused Deputy')
  • CWE-863 - Incorrect Authorization
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: < 0.5.0b3.dev100
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-42312 (GCVE-0-2026-42312)

Vulnerability from nvd – Published: 2026-05-11 16:32 – Updated: 2026-05-11 19:06
VLAI?
Title
pyload-ng: non-admin SETTINGS users can disable outbound TLS peer verification
Summary
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.
Severity ?
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-295 - Improper Certificate Validation
  • CWE-306 - Missing Authentication for Critical Function
  • CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: < 0.5.0b3.dev100
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-40594 (GCVE-0-2026-40594)

Vulnerability from nvd – Published: 2026-04-21 17:14 – Updated: 2026-04-21 18:01
VLAI?
Title
pyLoad: Session Cookie Security Downgrade via Untrusted X-Forwarded-Proto Header Spoofing (Global State Race Condition)
Summary
pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev98, the set_session_cookie_secure before_request handler in src/pyload/webui/app/__init__.py reads the X-Forwarded-Proto header from any HTTP request without validating that the request originates from a trusted proxy, then mutates the global Flask configuration SESSION_COOKIE_SECURE on every request. Because pyLoad uses the multi-threaded Cheroot WSGI server (request_queue_size=512), this creates a race condition where an attacker's request can influence the Secure flag on other users' session cookies — either downgrading cookie security behind a TLS proxy or causing a session denial-of-service on plain HTTP deployments. This vulnerability is fixed in 0.5.0b3.dev98.
Severity ?
4.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
CWE
  • CWE-346 - Origin Validation Error
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: < 0.5.0b3.dev98
Create a notification for this product.
Show details on NVD website
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CVE-2026-35592 (GCVE-0-2026-35592)

Vulnerability from nvd – Published: 2026-04-07 16:11 – Updated: 2026-04-08 14:58
VLAI?
Title
pyLoad has an Incomplete Tar Path Traversal Fix in UnTar._safe_extractall via os.path.commonprefix Bypass
Summary
pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev97, the _safe_extractall() function in src/pyload/plugins/extractors/UnTar.py uses os.path.commonprefix() for its path traversal check, which performs character-level string comparison rather than path-level comparison. This allows a specially crafted tar archive to write files outside the intended extraction directory. The correct function os.path.commonpath() was added to the codebase in the CVE-2026-32808 fix (commit 5f4f0fa) but was never applied to _safe_extractall(), making this an incomplete fix. This vulnerability is fixed in 0.5.0b3.dev97.
Severity ?
5.3 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: < 0.5.0b3.dev97
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-35586 (GCVE-0-2026-35586)

Vulnerability from nvd – Published: 2026-04-07 16:09 – Updated: 2026-04-07 18:16
VLAI?
Title
Authorization Bypass for SSL Certificate/Key Configuration Due to Option Name Mismatch in pyload-ng
Summary
pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev97, the ADMIN_ONLY_CORE_OPTIONS authorization set in set_config_value() uses incorrect option names ssl_cert and ssl_key, while the actual configuration option names are ssl_certfile and ssl_keyfile. This name mismatch causes the admin-only check to always evaluate to False, allowing any user with SETTINGS permission to overwrite the SSL certificate and key file paths. Additionally, the ssl_certchain option was never added to the admin-only set at all. This vulnerability is fixed in 0.5.0b3.dev97.
Severity ?
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: < 0.5.0b3.dev97
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-35463 (GCVE-0-2026-35463)

Vulnerability from nvd – Published: 2026-04-07 14:32 – Updated: 2026-04-08 14:46
VLAI?
Title
pyLoad has Improper Neutralization of Special Elements used in an OS Command
Summary
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.
Severity ?
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: <= 0.5.0b3.dev96
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-35459 (GCVE-0-2026-35459)

Vulnerability from nvd – Published: 2026-04-06 19:37 – Updated: 2026-04-07 19:29
VLAI?
Title
pyLoad has SSRF fix bypass via HTTP redirect
Summary
pyLoad is a free and open-source download manager written in Python. In 0.5.0b3.dev96 and earlier, pyLoad has a server-side request forgery (SSRF) vulnerability. The fix for CVE-2026-33992 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 never validated against the SSRF filter. An authenticated user with ADD permission can bypass the SSRF fix by submitting a URL that redirects to an internal address.
Severity ?
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: <= 0.5.0b3.dev96
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-35187 (GCVE-0-2026-35187)

Vulnerability from nvd – Published: 2026-04-06 19:33 – Updated: 2026-04-07 14:03
VLAI?
Title
pyLoad has SSRF in parse_urls API endpoint via unvalidated URL parameter
Summary
pyLoad is a free and open-source download manager written in Python. In 0.5.0b3.dev96 and earlier, the parse_urls API function in src/pyload/core/api/__init__.py fetches arbitrary URLs server-side via get_url(url) (pycurl) without any URL validation, protocol restriction, or IP blacklist. An authenticated user with ADD permission can make HTTP/HTTPS requests to internal network resources and cloud metadata endpoints, read local files via file:// protocol (pycurl reads the file server-side), interact with internal services via gopher:// and dict:// protocols, and enumerate file existence via error-based oracle (error 37 vs empty response).
Severity ?
7.7 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: <= 0.5.0b3.dev96
Create a notification for this product.
Show details on NVD website
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CVE-2026-33511 (GCVE-0-2026-33511)

Vulnerability from nvd – Published: 2026-03-24 18:56 – Updated: 2026-03-25 14:28
VLAI?
Title
pyload-ng: Authentication Bypass via Host Header Injection in ClickNLoad
Summary
pyLoad is a free and open-source download manager written in Python. From version 0.4.20 to before version 0.5.0b3.dev97, the local_check decorator in pyLoad's ClickNLoad feature can be bypassed by any remote attacker through HTTP Host header spoofing. This allows unauthenticated remote users to access localhost-restricted endpoints, enabling them to inject arbitrary downloads, write files to the storage directory, and execute JavaScript code. This issue has been patched in version 0.5.0b3.dev97.
Severity ?
8.8 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:L/SA:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: >= 0.4.20, < 0.5.0b3.dev97
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-33509 (GCVE-0-2026-33509)

Vulnerability from nvd – Published: 2026-03-24 18:55 – Updated: 2026-03-26 19:52
VLAI?
Title
pyload-ng: SETTINGS Permission Users Can Achieve Remote Code Execution via Unrestricted Reconnect Script Configuration
Summary
pyLoad is a free and open-source download manager written in Python. From version 0.4.0 to before version 0.5.0b3.dev97, the set_config_value() API endpoint allows users with the non-admin SETTINGS permission to modify any configuration option without restriction. The reconnect.script config option controls a file path that is passed directly to subprocess.run() in the thread manager's reconnect logic. A SETTINGS user can set this to any executable file on the system, achieving Remote Code Execution. The only validation in set_config_value() is a hardcoded check for general.storage_folder — all other security-critical settings including reconnect.script are writable without any allowlist or path restriction. This issue has been patched in version 0.5.0b3.dev97.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-269 - Improper Privilege Management
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: >= 0.4.0, < 0.5.0b3.dev97
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-33314 (GCVE-0-2026-33314)

Vulnerability from nvd – Published: 2026-03-24 18:52 – Updated: 2026-03-26 19:52
VLAI?
Title
pyload-ng: Improper Authentication and Origin Validation Error
Summary
pyLoad is a free and open-source download manager written in Python. Prior to version 0.5.0b3.dev97, a Host Header Spoofing vulnerability in the @local_check decorator allows unauthenticated external attackers to bypass local-only restrictions. This grants access to the Click'N'Load API endpoints, enabling attackers to remotely queue arbitrary downloads, leading to Server-Side Request Forgery (SSRF) and Denial of Service (DoS). This issue has been patched in version 0.5.0b3.dev97.
Severity ?
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
CWE
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: < 0.5.0b3.dev97
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-32808 (GCVE-0-2026-32808)

Vulnerability from nvd – Published: 2026-03-20 01:45 – Updated: 2026-03-25 14:29
VLAI?
Title
pyLoad: Arbitrary File Deletion via Path Traversal during Encrypted 7z Password Verification
Summary
pyLoad is a free and open-source download manager written in Python. Versions before 0.5.0b3.dev97 are vulnerable to path traversal during password verification of certain encrypted 7z archives (encrypted files with non-encrypted headers), causing arbitrary file deletion outside of the extraction directory. During password verification, pyLoad derives an archive entry name from 7z listing output and treats it as a filesystem path without constraining it to the extraction directory. This issue has been fixed in version 0.5.0b3.dev97.
Severity ?
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: >= 0.4.9-6262-g2fa0b11d3, < 0.5.0b3.dev97
Create a notification for this product.
Show details on NVD website
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CVE-2026-29778 (GCVE-0-2026-29778)

Vulnerability from nvd – Published: 2026-03-07 15:28 – Updated: 2026-03-09 18:26
VLAI?
Title
pyLoad: Arbitrary File Write via Path Traversal in edit_package()
Summary
pyLoad is a free and open-source download manager written in Python. From version 0.5.0b3.dev13 to 0.5.0b3.dev96, the edit_package() function implements insufficient sanitization for the pack_folder parameter. The current protection relies on a single-pass string replacement of "../", which can be bypassed using crafted recursive traversal sequences. This issue has been patched in version 0.5.0b3.dev97.
Severity ?
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
CWE
  • CWE-23 - Relative Path Traversal
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: >= 0.5.0b3.dev13, < 0.5.0b3.dev97
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-42315 (GCVE-0-2026-42315)

Vulnerability from cvelistv5 – Published: 2026-05-11 16:35 – Updated: 2026-05-11 20:16
VLAI?
Title
pyLoad: Path Traversal via Package Folder Name in set_package_data
Summary
pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev100, when passing a folder name in the set_package_data() API function call inside the data object with key "_folder", there is no sanitization at all, allowing a user with Perms.MODIFY to specify arbitrary directories as download locations for a package. This vulnerability is fixed in 0.5.0b3.dev100.
Severity ?
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  • CWE-36 - Absolute Path Traversal
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: < 0.5.0b3.dev100
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-42314 (GCVE-0-2026-42314)

Vulnerability from cvelistv5 – Published: 2026-05-11 16:34 – Updated: 2026-05-11 18:33
VLAI?
Title
pyLoad: Path Traversal via Package Folder Name
Summary
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 resolved by the OS. This vulnerability is fixed in 0.5.0b3.dev100.
Severity ?
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: < 0.5.0b3.dev100
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-42312 (GCVE-0-2026-42312)

Vulnerability from cvelistv5 – Published: 2026-05-11 16:32 – Updated: 2026-05-11 19:06
VLAI?
Title
pyload-ng: non-admin SETTINGS users can disable outbound TLS peer verification
Summary
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.
Severity ?
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-295 - Improper Certificate Validation
  • CWE-306 - Missing Authentication for Critical Function
  • CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: < 0.5.0b3.dev100
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-42313 (GCVE-0-2026-42313)

Vulnerability from cvelistv5 – Published: 2026-05-11 16:30 – Updated: 2026-05-12 13:51
VLAI?
Title
pyload-ng: non-admin SETTINGS users can redirect all outbound traffic through an attacker-controlled proxy
Summary
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.
Severity ?
8.3 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
CWE
  • CWE-441 - Unintended Proxy or Intermediary ('Confused Deputy')
  • CWE-863 - Incorrect Authorization
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: < 0.5.0b3.dev100
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-40594 (GCVE-0-2026-40594)

Vulnerability from cvelistv5 – Published: 2026-04-21 17:14 – Updated: 2026-04-21 18:01
VLAI?
Title
pyLoad: Session Cookie Security Downgrade via Untrusted X-Forwarded-Proto Header Spoofing (Global State Race Condition)
Summary
pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev98, the set_session_cookie_secure before_request handler in src/pyload/webui/app/__init__.py reads the X-Forwarded-Proto header from any HTTP request without validating that the request originates from a trusted proxy, then mutates the global Flask configuration SESSION_COOKIE_SECURE on every request. Because pyLoad uses the multi-threaded Cheroot WSGI server (request_queue_size=512), this creates a race condition where an attacker's request can influence the Secure flag on other users' session cookies — either downgrading cookie security behind a TLS proxy or causing a session denial-of-service on plain HTTP deployments. This vulnerability is fixed in 0.5.0b3.dev98.
Severity ?
4.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
CWE
  • CWE-346 - Origin Validation Error
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: < 0.5.0b3.dev98
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-35592 (GCVE-0-2026-35592)

Vulnerability from cvelistv5 – Published: 2026-04-07 16:11 – Updated: 2026-04-08 14:58
VLAI?
Title
pyLoad has an Incomplete Tar Path Traversal Fix in UnTar._safe_extractall via os.path.commonprefix Bypass
Summary
pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev97, the _safe_extractall() function in src/pyload/plugins/extractors/UnTar.py uses os.path.commonprefix() for its path traversal check, which performs character-level string comparison rather than path-level comparison. This allows a specially crafted tar archive to write files outside the intended extraction directory. The correct function os.path.commonpath() was added to the codebase in the CVE-2026-32808 fix (commit 5f4f0fa) but was never applied to _safe_extractall(), making this an incomplete fix. This vulnerability is fixed in 0.5.0b3.dev97.
Severity ?
5.3 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: < 0.5.0b3.dev97
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-35586 (GCVE-0-2026-35586)

Vulnerability from cvelistv5 – Published: 2026-04-07 16:09 – Updated: 2026-04-07 18:16
VLAI?
Title
Authorization Bypass for SSL Certificate/Key Configuration Due to Option Name Mismatch in pyload-ng
Summary
pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev97, the ADMIN_ONLY_CORE_OPTIONS authorization set in set_config_value() uses incorrect option names ssl_cert and ssl_key, while the actual configuration option names are ssl_certfile and ssl_keyfile. This name mismatch causes the admin-only check to always evaluate to False, allowing any user with SETTINGS permission to overwrite the SSL certificate and key file paths. Additionally, the ssl_certchain option was never added to the admin-only set at all. This vulnerability is fixed in 0.5.0b3.dev97.
Severity ?
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: < 0.5.0b3.dev97
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CVE-2026-35463 (GCVE-0-2026-35463)

Vulnerability from cvelistv5 – Published: 2026-04-07 14:32 – Updated: 2026-04-08 14:46
VLAI?
Title
pyLoad has Improper Neutralization of Special Elements used in an OS Command
Summary
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.
Severity ?
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: <= 0.5.0b3.dev96
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CVE-2026-35459 (GCVE-0-2026-35459)

Vulnerability from cvelistv5 – Published: 2026-04-06 19:37 – Updated: 2026-04-07 19:29
VLAI?
Title
pyLoad has SSRF fix bypass via HTTP redirect
Summary
pyLoad is a free and open-source download manager written in Python. In 0.5.0b3.dev96 and earlier, pyLoad has a server-side request forgery (SSRF) vulnerability. The fix for CVE-2026-33992 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 never validated against the SSRF filter. An authenticated user with ADD permission can bypass the SSRF fix by submitting a URL that redirects to an internal address.
Severity ?
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: <= 0.5.0b3.dev96
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CVE-2026-35187 (GCVE-0-2026-35187)

Vulnerability from cvelistv5 – Published: 2026-04-06 19:33 – Updated: 2026-04-07 14:03
VLAI?
Title
pyLoad has SSRF in parse_urls API endpoint via unvalidated URL parameter
Summary
pyLoad is a free and open-source download manager written in Python. In 0.5.0b3.dev96 and earlier, the parse_urls API function in src/pyload/core/api/__init__.py fetches arbitrary URLs server-side via get_url(url) (pycurl) without any URL validation, protocol restriction, or IP blacklist. An authenticated user with ADD permission can make HTTP/HTTPS requests to internal network resources and cloud metadata endpoints, read local files via file:// protocol (pycurl reads the file server-side), interact with internal services via gopher:// and dict:// protocols, and enumerate file existence via error-based oracle (error 37 vs empty response).
Severity ?
7.7 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: <= 0.5.0b3.dev96
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Show details on NVD website
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CVE-2026-33511 (GCVE-0-2026-33511)

Vulnerability from cvelistv5 – Published: 2026-03-24 18:56 – Updated: 2026-03-25 14:28
VLAI?
Title
pyload-ng: Authentication Bypass via Host Header Injection in ClickNLoad
Summary
pyLoad is a free and open-source download manager written in Python. From version 0.4.20 to before version 0.5.0b3.dev97, the local_check decorator in pyLoad's ClickNLoad feature can be bypassed by any remote attacker through HTTP Host header spoofing. This allows unauthenticated remote users to access localhost-restricted endpoints, enabling them to inject arbitrary downloads, write files to the storage directory, and execute JavaScript code. This issue has been patched in version 0.5.0b3.dev97.
Severity ?
8.8 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:L/SA:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: >= 0.4.20, < 0.5.0b3.dev97
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Show details on NVD website
To clipboard 

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CVE-2026-33509 (GCVE-0-2026-33509)

Vulnerability from cvelistv5 – Published: 2026-03-24 18:55 – Updated: 2026-03-26 19:52
VLAI?
Title
pyload-ng: SETTINGS Permission Users Can Achieve Remote Code Execution via Unrestricted Reconnect Script Configuration
Summary
pyLoad is a free and open-source download manager written in Python. From version 0.4.0 to before version 0.5.0b3.dev97, the set_config_value() API endpoint allows users with the non-admin SETTINGS permission to modify any configuration option without restriction. The reconnect.script config option controls a file path that is passed directly to subprocess.run() in the thread manager's reconnect logic. A SETTINGS user can set this to any executable file on the system, achieving Remote Code Execution. The only validation in set_config_value() is a hardcoded check for general.storage_folder — all other security-critical settings including reconnect.script are writable without any allowlist or path restriction. This issue has been patched in version 0.5.0b3.dev97.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-269 - Improper Privilege Management
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: >= 0.4.0, < 0.5.0b3.dev97
Create a notification for this product.
Show details on NVD website
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CVE-2026-33314 (GCVE-0-2026-33314)

Vulnerability from cvelistv5 – Published: 2026-03-24 18:52 – Updated: 2026-03-26 19:52
VLAI?
Title
pyload-ng: Improper Authentication and Origin Validation Error
Summary
pyLoad is a free and open-source download manager written in Python. Prior to version 0.5.0b3.dev97, a Host Header Spoofing vulnerability in the @local_check decorator allows unauthenticated external attackers to bypass local-only restrictions. This grants access to the Click'N'Load API endpoints, enabling attackers to remotely queue arbitrary downloads, leading to Server-Side Request Forgery (SSRF) and Denial of Service (DoS). This issue has been patched in version 0.5.0b3.dev97.
Severity ?
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
CWE
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: < 0.5.0b3.dev97
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-32808 (GCVE-0-2026-32808)

Vulnerability from cvelistv5 – Published: 2026-03-20 01:45 – Updated: 2026-03-25 14:29
VLAI?
Title
pyLoad: Arbitrary File Deletion via Path Traversal during Encrypted 7z Password Verification
Summary
pyLoad is a free and open-source download manager written in Python. Versions before 0.5.0b3.dev97 are vulnerable to path traversal during password verification of certain encrypted 7z archives (encrypted files with non-encrypted headers), causing arbitrary file deletion outside of the extraction directory. During password verification, pyLoad derives an archive entry name from 7z listing output and treats it as a filesystem path without constraining it to the extraction directory. This issue has been fixed in version 0.5.0b3.dev97.
Severity ?
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: >= 0.4.9-6262-g2fa0b11d3, < 0.5.0b3.dev97
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-29778 (GCVE-0-2026-29778)

Vulnerability from cvelistv5 – Published: 2026-03-07 15:28 – Updated: 2026-03-09 18:26
VLAI?
Title
pyLoad: Arbitrary File Write via Path Traversal in edit_package()
Summary
pyLoad is a free and open-source download manager written in Python. From version 0.5.0b3.dev13 to 0.5.0b3.dev96, the edit_package() function implements insufficient sanitization for the pack_folder parameter. The current protection relies on a single-pass string replacement of "../", which can be bypassed using crafted recursive traversal sequences. This issue has been patched in version 0.5.0b3.dev97.
Severity ?
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
CWE
  • CWE-23 - Relative Path Traversal
Assigner
References
Impacted products
Vendor Product Version
pyload pyload Affected: >= 0.5.0b3.dev13, < 0.5.0b3.dev97
Create a notification for this product.
Show details on NVD website
To clipboard 

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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}