PYSEC-2026-1974 Tornado vulnerable to excessive logging caused by malformed multipart form data

Summary When Tornado's multipart/form-data parser encounters certain errors, it logs a warning but continues trying to parse the remainder of the data. This allows remote attackers to generate an extremely high volume of logs, constituting a DoS attack. This DoS is compounded by the fact that the...

PYSEC-2026-1975 Tornado has an HTTP cookie parsing DoS vulnerability

The algorithm used for parsing HTTP cookies in Tornado versions prior to 6.4.2 sometimes has quadratic complexity, leading to excessive CPU consumption when parsing maliciously-crafted cookie headers. This parsing occurs in the event loop thread and may block the processing of other requests. See...

SUSE SLED15 / SLES15 Security Update : python-tornado6 (SUSE-SU-2026:2725-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2725-1 advisory. This update for python-tornado6 fixes the following issues - CVE-2026-49853: authorization header forwarded...

SUSE SLED15 / SLES15 Security Update : python-tornado (SUSE-SU-2026:2726-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2726-1 advisory. This update for python-tornado fixes the following issues - CVE-2026-49853: authorization header forwarded...

SUSE-SU-2026:2725-1 Security update for python-tornado6

This update for python-tornado6 fixes the following issues - CVE-2026-49853: authorization header forwarded across cross-origin redirects in SimpleAsyncHTTPClient bsc1268395. - CVE-2026-49854: out-of-bounds memory access via C extension bsc1268396. - CVE-2026-49855: AsyncHTTPClient accumulates...

openSUSE 16 Security Update : python-tornado6 (openSUSE-SU-2026:21067-1)

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21067-1 advisory. This update for python-tornado6 fixes the following issues - CVE-2026-49853: authorization header forwarded across cross-origin redirects in...

SUSE-SU-2026:22286-1 Security update for python-tornado6

This update for python-tornado6 fixes the following issues - CVE-2026-49853: authorization header forwarded across cross-origin redirects in SimpleAsyncHTTPClient bsc1268395. - CVE-2026-49854: out-of-bounds memory access via C extension bsc1268396. - CVE-2026-49855: AsyncHTTPClient accumulates...

OPENSUSE-SU-2026:21067-1 Security update for python-tornado6

This update for python-tornado6 fixes the following issues - CVE-2026-49853: authorization header forwarded across cross-origin redirects in SimpleAsyncHTTPClient bsc1268395. - CVE-2026-49854: out-of-bounds memory access via C extension bsc1268396. - CVE-2026-49855: AsyncHTTPClient accumulates...

Moderate: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

An update for Red Hat Hardened Images RPMs is now available. This update includes the following RPMs: python-sentry-sdk: python3-sentry-sdk+aiohttp-2.48.0-6.hum1 noarch python3-sentry-sdk+asyncpg-2.48.0-6.hum1 noarch python3-sentry-sdk+bottle-2.48.0-6.hum1 noarch...

CVE-2026-55488

motionEye mEye is an online interface for a piece of software called "motion," which is a video surveillance program with motion detection. Versions prior to 0.44.0 contain an absolute path traversal vulnerability in multiple media file handlers that allows an attacker to read arbitrary files fro...

CVE-2026-55488

CVE-2026-55488 (motionEye) is an absolute path traversal in motionEye prior to 0.44.0, affecting media file handlers that accept a user-controlled filename and build paths with os.path.join(). When an absolute path is provided, the target directory is ignored and the attacker-controlled path is u...

EUVD-2026-38804

motionEye mEye is an online interface for a piece of software called "motion," which is a video surveillance program with motion detection. Versions prior to 0.44.0 contain an absolute path traversal vulnerability in multiple media file handlers that allows an attacker to read arbitrary files fro...

OESA-2026-2728 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...

motionEye's Absolute Path Traversal in Media File Handlers Allows Arbitrary File Read

Summary mEye contains an absolute path traversal vulnerability in multiple media file handlers that allows an attacker to read arbitrary files from the filesystem. The affected handlers accept a user-controlled filename parameter and construct filesystem paths using os.path.join. When an absolute...

Python Library Tornado < 6.5.6 Multiple Vulnerabilities

The version of the Tornado Python library installed on the remote host is prior to 6.5.6. It is, therefore, affected by multiple vulnerabilities: - When SimpleAsyncHTTPClient follows a 3xx redirect, it shallow-copies the original HTTPRequest, rewrites the URL, decrements maxredirects, and removes...

Updated python-tornado packages fix security vulnerabilities

Tornado has a DoS due to too many multipart parts. CVE-2026-31958 In Tornado, cookie attribute injection could occur because the domain, path, and samesite arguments to .RequestHandler.setcookie were not checked for crafted characters. CVE-2026-35536...

GHSA-PW6J-QG29-8W7F Tornado: CurlAsyncHTTPClient leaks per-request credentials on handle reuse

CurlAsyncHTTPClient leaks per-request credentials on handle reuse Summary CurlAsyncHTTPClient pools and reuses pycurl handles across requests but does not reset them between requests, and several per-request options are applied with no clearing branch. As a result, sensitive state set by one...

Incorrect Resource Transfer Between Spheres

Overview tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed. Affected versions of this package are vulnerable to Incorrect Resource Transfer Between Spheres via SimpleAsyncHTTPClient. An attacker can obtain sensitive credentials by exploiting...

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

Summary 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 Authorization, authusername, authpassword, or authmode when the redirect target changes origin. As ...

Improper Handling of Highly Compressed Data (Data Amplification)

Overview tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed. Affected versions of this package are vulnerable to Improper Handling of Highly Compressed Data Data Amplification in the AsyncHTTPClient. An attacker can cause excessive memory...