DEBIAN-CVE-2026-49854

Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, the optional native extension tornado.speedups implemented websocketmask without validating that the mask argument is exactly four bytes, allowing the C function to read up to three bytes beyond the provided...

DEBIAN-CVE-2026-49853

Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, SimpleAsyncHTTPClient shallow-copied redirected requests and removed only the Host header, leaving Authorization, authusername, authpassword, and authmode in place when a redirect changed scheme, host, or port...

DEBIAN-CVE-2026-49855

Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, Tornado gzip decompression routines processed limited-size chunks but did not enforce an overall limit on accumulated decompressed chunks, allowing a malicious server accessed by SimpleAsyncHTTPClient or an...

CVE-2026-49854

Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, the optional native extension tornado.speedups implemented websocketmask without validating that the mask argument is exactly four bytes, allowing the C function to read up to three bytes beyond the provided...

CVE-2026-49853

Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, SimpleAsyncHTTPClient shallow-copied redirected requests and removed only the Host header, leaving Authorization, authusername, authpassword, and authmode in place when a redirect changed scheme, host, or port...

CVE-2026-49855

Tornado (Python) prior to 6.5.6 allows a malicious server accessed via SimpleAsyncHTTPClient or an HTTPServer with decompress_request=True to accumulate decompressed data without an overall size limit, potentially causing memory exhaustion. Affected is gzip decompression routines that previously ...

CVE-2026-49855 tornado AsyncHTTPClient accumulates decompressed chunks without size limit (gzip bomb)

Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, Tornado gzip decompression routines processed limited-size chunks but did not enforce an overall limit on accumulated decompressed chunks, allowing a malicious server accessed by SimpleAsyncHTTPClient or an...

CVE-2026-49854

Summary: Tornado’s optional native extension tornado.speedups mishandles the websocket_mask length, reading beyond a four-byte buffer when invoked through the XSRF token decoder with the extension active. This out-of-bounds access affects Tornado up to version 6.5.5 and is fixed in 6.5.6. Impact:...

CVE-2026-49853 Tornado: Authorization header forwarded across cross-origin redirects in SimpleAsyncHTTPClient

Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, SimpleAsyncHTTPClient shallow-copied redirected requests and removed only the Host header, leaving Authorization, authusername, authpassword, and authmode in place when a redirect changed scheme, host, or port...

tornado: Tornado: Cookie attribute injection due to improper handling of cookie arguments

A flaw was found in Tornado. A remote attacker could exploit this vulnerability by injecting specially crafted characters into the domain, path, and samesite arguments when setting cookies. This could lead to cookie attribute injection, potentially allowing for information disclosure or...

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...

tornado-python: Tornado: Denial of Service via large multipart bodies

A flaw was found in tornado-python. A remote attacker can exploit this vulnerability by sending a specially crafted, very large multipart body with numerous parts. Because the parsing of these large bodies occurs synchronously on the main thread, it can consume excessive resources, leading to a...

RLSA-2026:13641 Moderate: python-tornado security update

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Security Fixes:...

Amazon Linux 2023 : python3.13-tornado (ALAS2023-2026-1588)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1588 advisory. In Tornado before 6.5.5, cookie attribute injection could occur because the domain, path, and samesite arguments to .RequestHandler.setcookie were not checked for crafted characters. CVE-2026-35536...

OESA-2026-1995 python-tornado security update

Tornado is an open source version of the scalable, non-blocking web server and tools. Security Fixes: Tornado is a Python web framework and asynchronous networking library. In versions of Tornado prior to 6.5.5, the only limit on the number of parts in multipart/form-data is the maxbodysize setti...

SUSE CVE-2026-35536

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

EUVD-2026-18574

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

UBUNTU-CVE-2026-35536

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

CVE-2026-35536

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

CVE-2026-35536

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