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...

UBUNTU-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-2026-49854

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-2026-49854 Tornado: Out-of-bounds memory access in C extension

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-2026-49854

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:...

OESA-2026-2727 python-tornado security update

Tornado is an open source version of the scalable, non-blocking web server and tools. Security Fixes: When SimpleAsyncHTTPClient follows a 3xx redirect, it shallow-copies the original HTTPRequest, rewrites the URL, decrements maxredirects, and removes only the Host header. It does not clear...

Tornado has out-of-bounds memory access via C extension

Summary Tornado's optional native extension tornado.speedups implements websocketmask without validating that the mask argument is exactly four bytes long. The C function reads four bytes from mask unconditionally, even when Python passes a shorter byte string. This can read beyond the provided...

JLSEC-2026-423 curl's websocket code did not update the 32 bit mask pattern for each new outgoing frame as the...

curl's websocket code did not update the 32 bit mask pattern for each new outgoing frame as the specification says. Instead it used a fixed mask that persisted and was used throughout the entire connection. A predictable mask pattern allows for a malicious server to induce traffic between the two...

curl: predictable WebSocket mask

A flaw was found in curl. The use of a predictable WebSocket mask pattern allows a malicious server to induce traffic that an intermediary proxy whether configured or transparent will misinterpret as a standard HTTP request. This confusion leads to a cache poisoning attack, where the proxy stores...

Siemens SCALANCE and RUGGEDCOM Generation of Predictable Numbers or Identifiers (CVE-2025-10148)

curl's websocket code did not update the 32 bit mask pattern for each new outgoing frame as the specification says. Instead it used a fixed mask that persisted and was used throughout the entire connection. A predictable mask pattern allows for a malicious server to induce traffic between the two...

Amazon Linux 2023 : curl, curl-minimal, libcurl (ALAS2023-2025-1351)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-1351 advisory. When asked to both use a .netrc file for credentials and to follow HTTPredirects, curl could leak the password used for the first host to thefollowed-to host under certain circumstances. This...

Medium: curl

Issue Overview: When asked to both use a .netrc file for credentials and to follow HTTP redirects, curl could leak the password used for the first host to the followed-to host under certain circumstances. This flaw only manifests itself if the netrc file has an entry that matches the redirect...

OPENSUSE-SU-2025:20090-1 Security update for curl

This update for curl fixes the following issues: - CVE-2025-9086: Fixed Out of bounds read for cookie path bsc1249191 - CVE-2025-11563: Fixed wcurl path traversal with percent-encoded slashes bsc1253757 - CVE-2025-10148: Fixed predictable WebSocket mask bsc1249348 Other fixes: - tooloperate: fix...

SUSE-SU-2025:21077-1 Security update for curl

This update for curl fixes the following issues: - CVE-2025-9086: Fixed Out of bounds read for cookie path bsc1249191 - CVE-2025-11563: Fixed wcurl path traversal with percent-encoded slashes bsc1253757 - CVE-2025-10148: Fixed predictable WebSocket mask bsc1249348 Other fixes: - tooloperate: fix...

SUSE-SU-2025:21145-1 Security update for curl

This update for curl fixes the following issues: - CVE-2025-9086: Fixed Out of bounds read for cookie path bsc1249191 - CVE-2025-11563: Fixed wcurl path traversal with percent-encoded slashes bsc1253757 - CVE-2025-10148: Fixed predictable WebSocket mask bsc1249348 Other fixes: - tooloperate: fix...

Security update for curl

This update for curl fixes the following issues: tooloperate: fix return code when --retry is used but not triggered bsc1249367 Security fixes: CVE-2025-9086: Fixed Out of bounds read for cookie path bsc1249191 CVE-2025-10148: Fixed predictable WebSocket mask bsc1249348 Patch Instructions: To...

SUSE-SU-2025:20802-1 Security update for curl

This update for curl fixes the following issues: - tooloperate: fix return code when --retry is used but not triggered bsc1249367 - Security fixes: CVE-2025-9086: Fixed Out of bounds read for cookie path bsc1249191 CVE-2025-10148: Fixed predictable WebSocket mask bsc1249348...

SUSE-SU-2025:20824-1 Security update for curl

This update for curl fixes the following issues: - CVE-2025-9086: Fixed Out of bounds read for cookie path bsc1249191 - CVE-2025-10148: Predictable WebSocket mask bsc1249348 - Fix the --ftp-pasv option in curl v8.14.1 bsc1246197 - tooloperate: fix return code when --retry is used but not triggere...

Security update for curl

This update for curl fixes the following issues: CVE-2025-9086: Fixed Out of bounds read for cookie path bsc1249191 CVE-2025-10148: Predictable WebSocket mask bsc1249348 Fix the --ftp-pasv option in curl v8.14.1 bsc1246197 tooloperate: fix return code when --retry is used but not triggered...

Fedora: Security Advisory (FEDORA-2025-97ae15dc56)

The remote host is missing an update for the SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...