CVE-2026-111748 AIOHTTP: Absolute-form request targets can spoof Request.scheme

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, an attacker can send an absolute-form request that causes Request.scheme to use attacker-controlled request-target scheme data instead of the connection protocol. Applications that use Request.scheme...

CVE-2026-111748 AIOHTTP: Absolute-form request targets can spoof Request.scheme

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, an attacker can send an absolute-form request that causes Request.scheme to use attacker-controlled request-target scheme data instead of the connection protocol. Applications that use Request.scheme...

CVE-2026-111748 AIOHTTP: Absolute-form request targets can spoof Request.scheme

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, an attacker can send an absolute-form request that causes Request.scheme to use attacker-controlled request-target scheme data instead of the connection protocol. Applications that use Request.scheme...

Mercury: Stored / DOM Cross-Site Scripting (XSS): mr.Markdown renders untrusted content as raw, unsanitized HTML

Summary Mercury turns Jupyter notebooks into shared web apps/dashboards. The mr.Markdown widget converts its input to HTML with python-markdown and no sanitization step. MarkdownWidget is an ipywidgets.HTML widget, whose value is written to the page as raw HTML via innerHTML with no sanitization,...

CVE-2026-111065

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, Max-Age processing can overflow and skip closing a connection. An attacker can consequently exhaust the connection pool temporarily until garbage collection resolves the connections. This issue is fix...

CVE-2026-111064 aiohttp server lacks an initial request/header timeout

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, keepalive timeout handling is absent during the initial portion of a request. An attacker can keep an idle connection open indefinitely before sending any request data, consuming server connection...

CVE-2026-111063

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, the Secure attribute for a shared cookie is not enforced. An attacker can consequently cause a shared cookie marked Secure to be sent with an unencrypted request. This issue is fixed in version 3.14.4...

python: Use-after-free of a server-side SSLContext when sni_callback switches contexts

A flaw was found in Python. A remote, unauthenticated TLS client can cause a use-after-free in a server that uses SSLContext.snicallback to assign a different SSLSocket.context when selecting a certificate per server name, if nothing else keeps the original SSLContext alive. This can crash the...

python: python: Certificate verification bypass via missing server_hostname validation in SSLContext.wrap_bio()

A flaw was found in Python. When establishing secure connections using the SSLContext.wrapbio function with hostname checking enabled, the module fails to validate that a target server hostname is supplied. Because of this missing check, certificate hostname verification is silently skipped rathe...

python: python: Arbitrary file deletion via race condition during temporary directory cleanup

A flaw was found in Python. A race condition during the cleanup of temporary directories allows a local attacker with write access to replace a directory with a symbolic link a reference pointing to another location. This can lead to unauthorized deletion or alteration of files outside the...

Important: Red Hat Security Advisory: python3 security update

An update for python3 is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from t...

OPENSUSE-SU-2026:22136-1 Security update for python-joserfc

This update for python-joserfc fixes the following issues: Changes in python-joserfc: - CVE-2026-102946: JWS signature verification can be bypassed via empty signatures array bsc1285840...

AZL-110085 CVE-2026-112366 affecting package python-tensorboard 2.16.2-6

Picomatch through 4.0.7 contains a regular expression denial of service vulnerability that allows attackers to block the event loop by supplying single-branch repeated extglob patterns. Attackers can provide globs like + or +a, which analyzeRepeatedExtglob in lib/parse.js skips, causing exponenti...

CVE-2026-111058

Mercury is a Python framework for sharing Jupyter notebooks as web applications and dashboards. Prior to 3.2.6, default tokenless deployments allow anonymous clients to create Jupyter kernels and send executerequest messages containing arbitrary Python. The endpoint blocklist does not cover...

EUVD-2026-104453

Mercury is a Python framework for sharing Jupyter notebooks as web applications and dashboards. From 3.0.0 until 3.2.11, mr.Markdown converts attacker-controlled Markdown to HTML without sanitizing raw HTML before assigning it to an ipywidgets.HTML sink. Event-handler attributes and other active...

CVE-2026-111058 Mercury: Unauthenticated Remote Code Execution via /api/kernels

Mercury is a Python framework for sharing Jupyter notebooks as web applications and dashboards. Prior to 3.2.6, default tokenless deployments allow anonymous clients to create Jupyter kernels and send executerequest messages containing arbitrary Python. The endpoint blocklist does not cover...

EUVD-2026-104420

Mercury is a Python framework for sharing Jupyter notebooks as web applications and dashboards. Prior to 3.2.6, default tokenless deployments allow anonymous clients to create Jupyter kernels and send executerequest messages containing arbitrary Python. The endpoint blocklist does not cover...

CVE-2026-111058

Mercury is a Python framework for sharing Jupyter notebooks as web applications and dashboards. Prior to 3.2.6, default tokenless deployments allow anonymous clients to create Jupyter kernels and send executerequest messages containing arbitrary Python. The endpoint blocklist does not cover...

CVE-2026-111058 Mercury: Unauthenticated Remote Code Execution via /api/kernels

Mercury is a Python framework for sharing Jupyter notebooks as web applications and dashboards. Prior to 3.2.6, default tokenless deployments allow anonymous clients to create Jupyter kernels and send executerequest messages containing arbitrary Python. The endpoint blocklist does not cover...

CVE-2026-111058

The Mercury Python framework (prior to version 3.2.6 ) contains a vulnerability where default tokenless deployments allow anonymous clients to create Jupyter kernels. Attackers can send execute_request messages containing arbitrary Python code because the endpoint blocklist fails to cover /api/ke...