CVE-2026-82397

Tornado (Python web framework / async networking library), prior to 6.5.8 , parses application/x-www-form-urlencoded request bodies via urllib.parse.parse_qs in tornado/escape.py without passing max_num_fields. Because RequestHandler._execute parses the body before handler dispatch, an unauthenti...

CVE-2026-82397 Tornado: Urlencoded body parsing omits max_num_fields, so one request can stall the event loop

Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.8, Tornado parses application/x-www-form-urlencoded request bodies with urllib.parse.parseqs in tornado/escape.py without passing maxnumfields. RequestHandler.execute in tornado/web.py parses the body before handl...

PT-2026-84049

Name of the Vulnerable Software and Affected Versions Tornado versions prior to 6.5.8 Description Tornado parses application/x-www-form-urlencoded request bodies using urllib.parse.parse qs in tornado/escape.py without specifying the max num fields parameter. The process occurs within...

ROOT-APP-PYPI-CVE-2025-47287 CVE-2025-47287 in tornado - Patched by Root

Root has patched CVE-2025-47287 in the tornado package for Root:PyPI. Multiple fixed versions available...

ROOT-APP-PYPI-CVE-2026-35536 CVE-2026-35536 in tornado - Patched by Root

Root has patched CVE-2026-35536 in the tornado package for Root:PyPI. Multiple fixed versions available...

ROOT-APP-PYPI-CVE-2023-28370 CVE-2023-28370 in tornado - Patched by Root

Root has patched CVE-2023-28370 in the tornado package for Root:PyPI. Multiple fixed versions available...

ROOT-APP-PYPI-GHSA-753J-MPMX-QQ6G GHSA-753j-mpmx-qq6g in tornado - Patched by Root

Root has patched GHSA-753j-mpmx-qq6g in the tornado package for Root:PyPI. Multiple fixed versions available...

ROOT-APP-PYPI-GHSA-78CV-MQJ4-43F7 GHSA-78cv-mqj4-43f7 in tornado - Patched by Root

Root has patched GHSA-78cv-mqj4-43f7 in the tornado package for Root:PyPI. Multiple fixed versions available...

ROOT-APP-PYPI-CVE-2026-31958 CVE-2026-31958 in tornado - Patched by Root

Root has patched CVE-2026-31958 in the tornado package for Root:PyPI. Multiple fixed versions available...

ROOT-APP-PYPI-CVE-2026-49853 CVE-2026-49853 in tornado - Patched by Root

Root has patched CVE-2026-49853 in the tornado package for Root:PyPI. Multiple fixed versions available...

ROOT-APP-PYPI-CVE-2024-52804 CVE-2024-52804 in tornado - Patched by Root

Root has patched CVE-2024-52804 in the tornado package for Root:PyPI. Multiple fixed versions available...

ROOT-APP-PYPI-GHSA-PW6J-QG29-8W7F GHSA-pw6j-qg29-8w7f in tornado - Patched by Root

Root has patched GHSA-pw6j-qg29-8w7f in the tornado package for Root:PyPI. Multiple fixed versions available...

ROOT-APP-PYPI-GHSA-W235-7P84-XX57 GHSA-w235-7p84-xx57 in tornado - Patched by Root

Root has patched GHSA-w235-7p84-xx57 in the tornado package for Root:PyPI. Multiple fixed versions available...

ROOT-APP-PYPI-CVE-2026-49855 CVE-2026-49855 in tornado - Patched by Root

Root has patched CVE-2026-49855 in the tornado package for Root:PyPI. Multiple fixed versions available...

ROOT-APP-PYPI-GHSA-QPPV-J76H-2RPX GHSA-qppv-j76h-2rpx in tornado - Patched by Root

Root has patched GHSA-qppv-j76h-2rpx in the tornado package for Root:PyPI. Multiple fixed versions available...

Astra Linux – Vulnerability in python-tornado

In Tornado before version 6.5.5, cookie attribute injection could occur because the domain, path, and samesite arguments of .RequestHandler.setcookie were not checked for crafted characters...

Astra Linux – Vulnerability in python-tornado

A vulnerability in Tornado versions 6.3.1 and earlier allows a remote, unauthenticated attacker to redirect a user to an arbitrary web site and carry out a phishing attack by causing the user to access a specially crafted URL...

Astra Linux – Vulnerability in python-tornado

Tornado is a Python web framework and asynchronous networking library. In versions of Tornado prior to 6.5.5, the only limitation on the number of parts in multipart/form-data was the maxbodysize setting default: 100MB. Since parsing occurs synchronously on the main thread, this created a potenti...

CVE-2026-54134

OctoPrint provides a web interface for controlling consumer 3D printers. Prior to 1.11.8 and 2.0.0rc3, OctoPrint's custom Tornado upload handler and Flask with Werkzeug parse request parameters differently, allowing an attacker with FILEUPLOAD permission to inject reserved internal upload fields...

CVE-2026-54134

OctoPrint (web interface for 3D printers) versions prior to 1.11.8 and 2.0.0rc3 are vulnerable to file exfiltration via parser differentials between its custom Tornado upload handler and Flask/Werkzeug. An attacker with FILE_UPLOAD permission can inject reserved internal form fields through query...