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ALSA-2026:13641 — Moderate: python-tornado security update

2026-10-02T20:34:02.126507+00:00

Affected: AlmaLinux:10: python3-tornado

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 Fix(es):

* tornado-python: Tornado: Denial of Service via large multipart bodies (CVE-2026-31958) * tornado: Tornado: Cookie attribute injection due to improper handling of cookie arguments (CVE-2026-35536)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

bdu:2026-07217

2026-10-02T20:34:02.126621+00:00

bdu:2026-07217

BELL-CVE-2026-35536

2026-10-02T20:34:02.126640+00:00

Affected: Alpaquita:25: py3-tornado, Alpaquita:stream: py3-tornado

BREW-jupyterlab-CVE-2026-35536 — Tornado has incomplete validation of cookie attributes

2026-10-02T20:34:02.126662+00:00

Affected: Homebrew: jupyterlab

Values passed to the `domain`, `path`, and `samesite` arguments of `RequestHandler.set_cookie` were not completely validated in versions of Tornado prior to 6.5.5. In particular, semicolons would be allowed, which could be used to inject attacker-controlled values for other cookie attributes.

certfr-2026-avi-0901 — De multiples vulnérabilités ont été découvertes dans les produits IBM. Certaines d'entre elles permettent à un attaquan…

2026-10-02T20:34:02.126685+00:00

certfr-2026-avi-0901

Withdrawn: CLEANSTART-2026-AZ09261 — Security fixes for CVE-2023-46136, CVE-2024-12797, CVE-2024-34069, CVE-2024-49766, CVE-2024-49767, CVE-2025-62727, CVE-…

2026-10-02T20:34:02.126702+00:00

Withdrawn by the publisher.

Affected: CleanStart: airflow-3

Multiple security vulnerabilities affect the airflow-3 package. These issues are resolved in later releases. See references for individual vulnerability details.

EUVD-2026-280118

2026-10-02T20:34:02.126729+00:00

EUVD-2026-280118

fkie_cve-2026-35536

2026-10-02T20:34:02.126742+00:00

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

GHSA-fqwm-6jpj-5wxc — Tornado has cookie attribute injection via .RequestHandler.set_cookie

2026-10-02T20:34:02.126763+00:00

Affected: PyPI: tornado

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

OESA-2026-1903 — python-tornado security update

2026-10-02T20:34:02.126783+00:00

Affected: openEuler:24.03-LTS-SP3: python-tornado, openEuler:20.03-LTS-SP4: python-tornado, openEuler:22.03-LTS-SP4: python-tornado, openEuler:24.03-LTS: python-tornado, openEuler:24.03-LTS-SP1: python-tornado, openEuler:24.03-LTS-SP2: python-tornado

Tornado is an open source version of the scalable, non-blocking web server and tools. Security Fix(es):

Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, the supplied reason phrase is used unescaped in HTTP headers (where it could be used for header injection) or in HTML in the default error page (where it could be used for XSS) and can be exploited by passing untrusted or malicious data into the reason argument. Used by both RequestHandler.set_status and tornado.web.HTTPError, the argument is designed to allow applications to pass custom "reason" phrases (the "Not Found" in HTTP/1.1 404 Not Found) to the HTTP status line (mainly for non-standard status codes). This issue is fixed in version 6.5.3.(CVE-2025-67724)

In Tornado before 6.5.5, cookie attribute injection could occur because the domain, path, and samesite arguments to .RequestHandler.set_cookie were not checked for crafted characters.(CVE-2026-35536)

PYSEC-2026-2287

2026-10-02T20:34:02.126821+00:00

Affected: PyPI: tornado

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

RHSA-2026:13641 — Red Hat Security Advisory: python-tornado security update

2026-10-02T20:34:02.126841+00:00

tornado-python: Tornado: Denial of Service via large multipart bodies tornado: Tornado: Cookie attribute injection due to improper handling of cookie arguments

RHSA-2026:20572 — Red Hat Security Advisory: python-tornado security update

2026-10-02T20:34:02.126861+00:00

tornado-python: Tornado: Denial of Service via large multipart bodies tornado: Tornado: Cookie attribute injection due to improper handling of cookie arguments

UBUNTU-CVE-2026-35536

2026-10-02T20:34:02.126879+00:00

Affected: Ubuntu:Pro:16.04:LTS: python-tornado, Ubuntu:Pro:18.04:LTS: python-tornado, Ubuntu:Pro:22.04:LTS: python-tornado, Ubuntu:24.04:LTS: python-tornado, Ubuntu:25.10: python-tornado, Ubuntu:26.04:LTS: python-tornado

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

WID-SEC-W-2026-2933 — Splunk SOAR: Mehrere Schwachstellen

2026-10-02T20:34:02.126906+00:00

Ein Angreifer kann mehrere Schwachstellen in Splunk SOAR ausnutzen, um Sicherheitsvorkehrungen zu umgehen, um Informationen offenzulegen, um Dateien zu manipulieren, um einen SQL-Injection Angriff durchzuführen, um einen Cross-Site Scripting Angriff durchzuführen, und um beliebigen Programmcode auszuführen.