Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

Overview nltk is a Natural Language Toolkit NLTK is a Python package for natural language processing. Affected versions of this package are vulnerable to Improper Restriction of Recursive Entity References in DTDs 'XML Entity Expansion' via the raw xml.etree.ElementTree parsing in...

GHSA-JX89-3QG8-P2MR Duplicate Advisory: Entity-expansion DoS (billion laughs) via remaining raw ElementTree parses (CWE-776)

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-97qj-x29f-37w7. This link is maintained to preserve external references. Original Description NLTK versions before 3.10.3 use xml.etree.ElementTree to parse XML in multiple modules, which honors entity...

Duplicate Advisory: Entity-expansion DoS (billion laughs) via remaining raw ElementTree parses (CWE-776)

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-97qj-x29f-37w7. This link is maintained to preserve external references. Original Description NLTK versions before 3.10.3 use xml.etree.ElementTree to parse XML in multiple modules, which honors entity...

PYSEC-2026-3748

NLTK versions before 3.10.3 use xml.etree.ElementTree to parse XML in multiple modules, which honors entity declarations in document DTDs. Attackers can craft XML payloads with nested entity declarations that expand from hundreds of bytes to megabytes in memory, causing denial of service...

CVE-2026-78681

NLTK versions before 3.10.3 use xml.etree.ElementTree to parse XML in multiple modules, which honors entity declarations in document DTDs. Attackers can craft XML payloads with nested entity declarations that expand from hundreds of bytes to megabytes in memory, causing denial of service...

DEBIAN-CVE-2026-78681

NLTK versions before 3.10.3 use xml.etree.ElementTree to parse XML in multiple modules, which honors entity declarations in document DTDs. Attackers can craft XML payloads with nested entity declarations that expand from hundreds of bytes to megabytes in memory, causing denial of service...

PYSEC-2026-3748

NLTK versions before 3.10.3 use xml.etree.ElementTree to parse XML in multiple modules, which honors entity declarations in document DTDs. Attackers can craft XML payloads with nested entity declarations that expand from hundreds of bytes to megabytes in memory, causing denial of service...

CVE-2026-78681 NLTK before 3.10.3 Entity Expansion DoS via ElementTree

NLTK versions before 3.10.3 use xml.etree.ElementTree to parse XML in multiple modules, which honors entity declarations in document DTDs. Attackers can craft XML payloads with nested entity declarations that expand from hundreds of bytes to megabytes in memory, causing denial of service...

CVE-2026-78681

NLTK versions before 3.10.3 use xml.etree.ElementTree to parse XML in multiple modules, which honors entity declarations in document DTDs. Attackers can craft XML payloads with nested entity declarations that expand from hundreds of bytes to megabytes in memory, causing denial of service...

CVE-2026-78681 NLTK before 3.10.3 Entity Expansion DoS via ElementTree

NLTK versions before 3.10.3 use xml.etree.ElementTree to parse XML in multiple modules, which honors entity declarations in document DTDs. Attackers can craft XML payloads with nested entity declarations that expand from hundreds of bytes to megabytes in memory, causing denial of service...

CVE-2026-78681

NLTK versions before 3.10.3 are vulnerable to a denial of service via XML entity expansion. The library uses xml.etree.ElementTree to parse XML in multiple modules, and this parser honors entity declarations in document DTDs. An attacker can supply a crafted XML payload containing nested entity d...

CVE-2026-78681 NLTK before 3.10.3 Entity Expansion DoS via ElementTree

NLTK versions before 3.10.3 use xml.etree.ElementTree to parse XML in multiple modules, which honors entity declarations in document DTDs. Attackers can craft XML payloads with nested entity declarations that expand from hundreds of bytes to megabytes in memory, causing denial of service...

CVE-2026-78681

NLTK versions before 3.10.3 use xml.etree.ElementTree to parse XML in multiple modules, which honors entity declarations in document DTDs. Attackers can craft XML payloads with nested entity declarations that expand from hundreds of bytes to megabytes in memory, causing denial of service...

PT-2026-81156

Name of the Vulnerable Software and Affected Versions NLTK versions prior to 3.10.3 Description Multiple modules use the xml.etree.ElementTree library to parse XML, which honors entity declarations in document DTDs Document Type Definitions. This allows attackers to craft XML payloads with nested...

Linux Distros Unpatched Vulnerability : CVE-2026-78681

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - NLTK versions before 3.10.3 use xml.etree.ElementTree to parse XML in multiple modules, which honors entity declarations in document DTDs. Attackers can craft X...

ALSA-2026:59372 Moderate: assertj-core security update

A rich and intuitive set of strongly-typed assertions to use for unit testing either with JUnit or TestNG. Security Fixes: assertj: AssertJ: Information disclosure and denial of service via XML External Entity XXE CVE-2026-24400 For more details about the security issues, including the impact, a...

CVE-2026-78681: Improper Restriction of Recursive Entity References in DTDs

NLTK versions before 3.10.3 use xml.etree.ElementTree to parse XML in multiple modules, which honors entity declarations in document DTDs. Attackers can craft XML payloads with nested entity declarations that expand from hundreds of bytes to megabytes in memory, causing denial of service...

CVE-2026-78681

NLTK versions before 3.10.3 use xml.etree.ElementTree to parse XML in multiple modules, which honors entity declarations in document DTDs. Attackers can craft XML payloads with nested entity declarations that expand from hundreds of bytes to megabytes in memory, causing denial of service...

EulerOS Virtualization 2.13.1 : python-lxml (EulerOS-SA-2026-3190)

According to the versions of the python-lxml packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : lxml is a library for processing XML and HTML in the Python language. Prior to 6.1.0, using either of the two parsers in the...

RHEL 10 : assertj-core (RHSA-2026:59372)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:59372 advisory. A rich and intuitive set of strongly-typed assertions to use for unit testing either with JUnit or TestNG. Security Fixes: assertj: AssertJ:...