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101 vulnerabilities found for Pyload by Pyload
CVE-2026-44226 (GCVE-0-2026-44226)
Vulnerability from nvd – Published: 2026-05-11 16:36 – Updated: 2026-05-11 18:27
VLAI
Title
pyLoad: Unauthenticated traceback disclosure via global exception handler in WebUI
Summary
pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev100, pyload-ng WebUI returns full Python traceback details to clients on unhandled exceptions. Because /web/<path:filename> is reachable without authentication and renders attacker-controlled template names, an unauthenticated user can reliably trigger a server exception (for example by requesting a non-existent template) and receive internal stack traces in the HTTP response. This vulnerability is fixed in 0.5.0b3.dev100.
Severity
5.3 (Medium)
CWE
- CWE-209 - Generation of Error Message Containing Sensitive Information
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
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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)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
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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)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
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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)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
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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)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
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CVE-2026-41133 (GCVE-0-2026-41133)
Vulnerability from nvd – Published: 2026-04-21 23:41 – Updated: 2026-04-22 18:35
VLAI
Title
pyLoad has Stale Session Privilege After Role/Permission Change (Privilege Revocation Bypass)
Summary
pyLoad is a free and open-source download manager written in Python. Versions up to and including 0.5.0b3.dev97 cache `role` and `permission` in the session at login and continues to authorize requests using these cached values, even after an admin changes the user's role/permissions in the database. As a result, an already logged-in user can keep old (revoked) privileges until logout/session expiry, enabling continued privileged actions. This is a core authorization/session-consistency issue and is not resolved by toggling an optional security feature. Commit e95804fb0d06cbb07d2ba380fc494d9ff89b68c1 contains a fix for the issue.
Severity
8.8 (High)
CWE
- CWE-613 - Insufficient Session Expiration
Assigner
References
2 references
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|---|---|
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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)
CWE
- CWE-346 - Origin Validation Error
Assigner
References
1 reference
| URL | Tags |
|---|---|
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CVE-2026-40071 (GCVE-0-2026-40071)
Vulnerability from nvd – Published: 2026-04-09 17:36 – Updated: 2026-04-10 14:09
VLAI
Title
pyLoad WebUI JSON permission mismatch lets ADD/DELETE users invoke MODIFY-only actions
Summary
pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev97, the /json/package_order, /json/link_order, and /json/abort_link WebUI JSON endpoints enforce weaker permissions than the core API methods they invoke. This allows authenticated low-privileged users to execute MODIFY operations that should be denied by pyLoad's own permission model. This vulnerability is fixed in 0.5.0b3.dev97.
Severity
5.4 (Medium)
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
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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)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
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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)
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
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CVE-2026-35464 (GCVE-0-2026-35464)
Vulnerability from nvd – Published: 2026-04-07 14:38 – Updated: 2026-04-07 15:58
VLAI
Title
pyLoad has an incomplete fix for CVE-2026-33509: unprotected storage_folder enables arbitrary file write to Flask session store and code execution
Summary
pyLoad is a free and open-source download manager written in Python. The fix for CVE-2026-33509 added an ADMIN_ONLY_OPTIONS set to block non-admin users from modifying security-critical config options. The storage_folder option is not in this set and passes the existing path restriction because the Flask session directory is outside both PKGDIR and userdir. A user with SETTINGS and ADD permissions can redirect downloads to the Flask filesystem session store, plant a malicious pickle payload as a predictable session file, and trigger arbitrary code execution when any HTTP request arrives with the corresponding session cookie. This vulnerability is fixed with commit c4cf995a2803bdbe388addfc2b0f323277efc0e1.
Severity
7.5 (High)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
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| https://github.com/pyload/pyload/commit/c4cf995a2… | x_refsource_MISC |
| https://www.cve.org/CVERecord?id=CVE-2026-33509 | x_refsource_MISC |
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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)
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
2 references
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|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
| https://github.com/pyload/pyload/commit/c4cf995a2… | x_refsource_MISC |
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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
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
| https://github.com/pyload/pyload/commit/33c55da08… | x_refsource_MISC |
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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)
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
| https://github.com/pyload/pyload/commit/4032e57d6… | x_refsource_MISC |
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CVE-2026-33992 (GCVE-0-2026-33992)
Vulnerability from nvd – Published: 2026-03-27 22:12 – Updated: 2026-03-30 18:29
VLAI
Title
pyLoad: Server-Side Request Forgery via Download Link Submission Enables Cloud Metadata Exfiltration
Summary
pyLoad is a free and open-source download manager written in Python. Prior to version 0.5.0b3.dev97, 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 infrastructure data including droplet ID, network configuration, region, authentication keys, and SSH keys configured in user-data/cloud-init. Version 0.5.0b3.dev97 contains a patch.
Severity
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
2 references
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|---|---|
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CVE-2026-44226 (GCVE-0-2026-44226)
Vulnerability from cvelistv5 – Published: 2026-05-11 16:36 – Updated: 2026-05-11 18:27
VLAI
Title
pyLoad: Unauthenticated traceback disclosure via global exception handler in WebUI
Summary
pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev100, pyload-ng WebUI returns full Python traceback details to clients on unhandled exceptions. Because /web/<path:filename> is reachable without authentication and renders attacker-controlled template names, an unauthenticated user can reliably trigger a server exception (for example by requesting a non-existent template) and receive internal stack traces in the HTTP response. This vulnerability is fixed in 0.5.0b3.dev100.
Severity
5.3 (Medium)
CWE
- CWE-209 - Generation of Error Message Containing Sensitive Information
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
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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)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
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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)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
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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)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
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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)
CWE
Assigner
References
1 reference
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CVE-2026-41133 (GCVE-0-2026-41133)
Vulnerability from cvelistv5 – Published: 2026-04-21 23:41 – Updated: 2026-04-22 18:35
VLAI
Title
pyLoad has Stale Session Privilege After Role/Permission Change (Privilege Revocation Bypass)
Summary
pyLoad is a free and open-source download manager written in Python. Versions up to and including 0.5.0b3.dev97 cache `role` and `permission` in the session at login and continues to authorize requests using these cached values, even after an admin changes the user's role/permissions in the database. As a result, an already logged-in user can keep old (revoked) privileges until logout/session expiry, enabling continued privileged actions. This is a core authorization/session-consistency issue and is not resolved by toggling an optional security feature. Commit e95804fb0d06cbb07d2ba380fc494d9ff89b68c1 contains a fix for the issue.
Severity
8.8 (High)
CWE
- CWE-613 - Insufficient Session Expiration
Assigner
References
2 references
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|---|---|
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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)
CWE
- CWE-346 - Origin Validation Error
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
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CVE-2026-40071 (GCVE-0-2026-40071)
Vulnerability from cvelistv5 – Published: 2026-04-09 17:36 – Updated: 2026-04-10 14:09
VLAI
Title
pyLoad WebUI JSON permission mismatch lets ADD/DELETE users invoke MODIFY-only actions
Summary
pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev97, the /json/package_order, /json/link_order, and /json/abort_link WebUI JSON endpoints enforce weaker permissions than the core API methods they invoke. This allows authenticated low-privileged users to execute MODIFY operations that should be denied by pyLoad's own permission model. This vulnerability is fixed in 0.5.0b3.dev97.
Severity
5.4 (Medium)
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
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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)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
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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)
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
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CVE-2026-35464 (GCVE-0-2026-35464)
Vulnerability from cvelistv5 – Published: 2026-04-07 14:38 – Updated: 2026-04-07 15:58
VLAI
Title
pyLoad has an incomplete fix for CVE-2026-33509: unprotected storage_folder enables arbitrary file write to Flask session store and code execution
Summary
pyLoad is a free and open-source download manager written in Python. The fix for CVE-2026-33509 added an ADMIN_ONLY_OPTIONS set to block non-admin users from modifying security-critical config options. The storage_folder option is not in this set and passes the existing path restriction because the Flask session directory is outside both PKGDIR and userdir. A user with SETTINGS and ADD permissions can redirect downloads to the Flask filesystem session store, plant a malicious pickle payload as a predictable session file, and trigger arbitrary code execution when any HTTP request arrives with the corresponding session cookie. This vulnerability is fixed with commit c4cf995a2803bdbe388addfc2b0f323277efc0e1.
Severity
7.5 (High)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
| https://github.com/pyload/pyload/security/advisor… | x_refsource_MISC |
| https://github.com/pyload/pyload/commit/c4cf995a2… | x_refsource_MISC |
| https://www.cve.org/CVERecord?id=CVE-2026-33509 | x_refsource_MISC |
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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)
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
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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
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
2 references
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|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
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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)
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
| https://github.com/pyload/pyload/commit/4032e57d6… | x_refsource_MISC |
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CVE-2026-33992 (GCVE-0-2026-33992)
Vulnerability from cvelistv5 – Published: 2026-03-27 22:12 – Updated: 2026-03-30 18:29
VLAI
Title
pyLoad: Server-Side Request Forgery via Download Link Submission Enables Cloud Metadata Exfiltration
Summary
pyLoad is a free and open-source download manager written in Python. Prior to version 0.5.0b3.dev97, 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 infrastructure data including droplet ID, network configuration, region, authentication keys, and SSH keys configured in user-data/cloud-init. Version 0.5.0b3.dev97 contains a patch.
Severity
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/pyload/pyload/security/advisor… | x_refsource_CONFIRM |
| https://github.com/pyload/pyload/commit/b76b6d4ee… | x_refsource_MISC |
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