CVE-2026-15308 Incremental HTMLParser feed() allows CPU-exhaustion DoS via repeated unterminated markup declarations

The incremental HTML parser html.parser.HTMLParser allows for CPU denial-of-service through repeated unterminated markup declarations when processing uncontrolled data...

Infinite loop

Overview Affected versions of this package are vulnerable to Infinite loop via the HTMLParser process. An attacker can cause excessive CPU consumption and render the system unresponsive by supplying specially crafted, malformed HTML with repeated unterminated markup declarations. Remediation A fi...

CVE-2026-15308 Incremental HTMLParser feed() allows CPU-exhaustion DoS via repeated unterminated markup declarations

The incremental HTML parser html.parser.HTMLParser allows for CPU denial-of-service through repeated unterminated markup declarations when processing uncontrolled data...

Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS : Python vulnerabilities (USN-8509-1)

The remote Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8509-1 advisory. It was discovered that Python incorrectly normalized paths in the tarfile module. An attacker could possibly use this issue to...

USN-8509-1 python3.10, python3.12, python3.14 vulnerabilities

It was discovered that Python incorrectly normalized paths in the tarfile module. An attacker could possibly use this issue to bypass path restrictions. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. CVE-2025-13462 It was discovered that Python's HTMLParser incorrectly handled...

USN-8509-1: Python vulnerabilities

It was discovered that Python incorrectly normalized paths in the tarfile module. An attacker could possibly use this issue to bypass path restrictions. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. CVE-2025-13462 It was discovered that Python's HTMLParser incorrectly handled...

Chromium: CVE-2026-13977 Inappropriate implementation in HTMLParser

This CVE was assigned by Chrome. Microsoft Edge Chromium-based ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information...

Linux Distros Unpatched Vulnerability : CVE-2026-13977

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Inappropriate implementation in HTMLParser in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to inject arbitrary scripts or HTML UXSS via a...

CVE-2026-13977

CVE-2026-13977 describes an insecure implementation in HTMLParser in Google Chrome/Chromium, enabling UXSS by injecting scripts/HTML through a crafted HTML page. The vulnerability affects Chrome/Chromium builds prior to 150.0.7871.47, with a CVSS v3.1 base score of 5.4 (Medium). The provided docu...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: python3 (UTSA-2026-014320)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-014320 advisory. The html.parser.HTMLParser class had worse-case quadratic complexity when processing certain crafted malformed inputs potentially leading to amplified...

UBUNTU-CVE-2025-69534

Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown...

EulerOS Virtualization 2.10.1 : python3 (EulerOS-SA-2026-1141)

According to the versions of the python3 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : There is a defect in the CPython 'tarfile' module affecting the 'TarFile' extraction and entry enumeration APIs. The tar...

EulerOS Virtualization 2.10.0 : python3 (EulerOS-SA-2026-1192)

According to the versions of the python3 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : There is a defect in the CPython 'tarfile' module affecting the 'TarFile' extraction and entry enumeration APIs. The tar...

ROS-20260129-73-0015

A vulnerability in the html.parser.HTMLParser module of the Python programming language interpreter involves the use of a regular expression with inefficient computational complexity. Exploitation of the vulnerability could allow an attacker acting remotely to cause a denial of service...

EulerOS 2.0 SP12 : python3 (EulerOS-SA-2026-1098)

According to the versions of the python3 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : The html.parser.HTMLParser class had worse-case quadratic complexity when processing certain crafted malformed inputs potentially leading to...

EulerOS 2.0 SP12 : python3 (EulerOS-SA-2026-1078)

According to the versions of the python3 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : The html.parser.HTMLParser class had worse-case quadratic complexity when processing certain crafted malformed inputs potentially leading to...

EulerOS 2.0 SP10 : python3 (EulerOS-SA-2026-1036)

According to the versions of the python3 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : There is a defect in the CPython 'tarfile' module affecting the 'TarFile' extraction and entry enumeration APIs. The tar implementation would...

EulerOS Virtualization 2.13.1 : python3 (EulerOS-SA-2025-2628)

According to the versions of the python3 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : During an address list folding when a separating comma ends up on a folded line and that line is to be unicode-encoded then the...

AlmaLinux 9 : python3.9 (ALSA-2025:23342)

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2025:23342 advisory. python: Invalid value for OpenSSL API may cause Buffer over-read when NPN is used CVE-2024-5642 cpython: Python HTMLParser quadratic complexity...

AlmaLinux 8 : python39:3.9 (ALSA-2025:23530)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2025:23530 advisory. python: Invalid value for OpenSSL API may cause Buffer over-read when NPN is used CVE-2024-5642 python: Virtual environment venv activation scripts don't...