PYSEC-2026-801 XML Entity Expansion (XEE) in Django

The XML libraries for Python, as used in OpenStack Keystone Essex, Folsom, and Grizzly; Compute Nova Essex and Folsom; Cinder Folsom; Django; and possibly other products allow remote attackers to cause a denial of service resource consumption and crash via an XML Entity Expansion XEE attack...

OpenStack Compute (Nova) vulnerable to denial of service via XML Entity Expansion attack

The security group extension in OpenStack Compute Nova Grizzly 2013.1.3, Havana before havana-3, and earlier allows remote attackers to cause a denial of service resource consumption and crash via an XML Entity Expansion XEE attack. NOTE: this issue is due to an incomplete fix for CVE-2013-1664...

PYSEC-2026-875 OpenStack Compute (Nova) vulnerable to denial of service via XML Entity Expansion attack

The security group extension in OpenStack Compute Nova Grizzly 2013.1.3, Havana before havana-3, and earlier allows remote attackers to cause a denial of service resource consumption and crash via an XML Entity Expansion XEE attack. NOTE: this issue is due to an incomplete fix for CVE-2013-1664...

PYSEC-2026-790 OpenStack Cinder Denial of Service using XML entities

The 1 backup api/contrib/backups.py and 2 volume transfer contrib/volumetransfer.py APIs in OpenStack Cinder Grizzly 2013.1.3 and earlier allows remote attackers to cause a denial of service resource consumption and crash via an XML Entity Expansion XEE attack. NOTE: this issue is due to an...

PYSEC-2026-741 XML Entity Expansion in trytond and proteus

An XML Entity Expansion XEE issue was discovered in Tryton Application Platform Server 5.x through 5.0.45, 6.x through 6.0.15, and 6.1.x and 6.2.x through 6.2.5, and Tryton Application Platform Command Line Client proteus 5.x through 5.0.11, 6.x through 6.0.4, and 6.1.x and 6.2.x through 6.2.1. A...

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

Overview Affected versions of this package are vulnerable to Improper Restriction of Recursive Entity References in DTDs 'XML Entity Expansion' through the processing of a deeply nested ASN.1 structure. An attacker can cause a stack overflow and disrupt service availability by sending specially...

EUVD-2026-39593

A flaw was found in Apicurio Registry. The DocumentBuilderAccessor correctly blocks external DTD and schema access but does not disable DOCTYPE declarations or enable FEATURESECUREPROCESSING. An attacker with artifact-write permission can upload XML documents with internal entity-expansion payloa...

CVE-2026-12993

A flaw was found in Apicurio Registry. The DocumentBuilderAccessor correctly blocks external DTD and schema access but does not disable DOCTYPE declarations or enable FEATURESECUREPROCESSING. An attacker with artifact-write permission can upload XML documents with internal entity-expansion payloa...

CVE-2026-12993 Apicurio/apicurio-registry: apicurio-registry: xml entity-expansion denial of service via internal dtd subset

A flaw was found in Apicurio Registry. The DocumentBuilderAccessor correctly blocks external DTD and schema access but does not disable DOCTYPE declarations or enable FEATURESECUREPROCESSING. An attacker with artifact-write permission can upload XML documents with internal entity-expansion payloa...

CVE-2026-12993

Affected software: Apicurio Registry. Vulnerability: DocumentBuilderAccessor does not disable DOCTYPE declarations or enable FEATURE_SECURE_PROCESSING, allowing an attacker with artifact-write permission to upload XML documents containing internal entity-expansion payloads (billion-laughs) that c...

CVE-2026-12993 Apicurio/apicurio-registry: apicurio-registry: xml entity-expansion denial of service via internal dtd subset

A flaw was found in Apicurio Registry. The DocumentBuilderAccessor correctly blocks external DTD and schema access but does not disable DOCTYPE declarations or enable FEATURESECUREPROCESSING. An attacker with artifact-write permission can upload XML documents with internal entity-expansion payloa...

CVE-2026-12993

A flaw was found in Apicurio Registry. The DocumentBuilderAccessor correctly blocks external DTD and schema access but does not disable DOCTYPE declarations or enable FEATURESECUREPROCESSING. An attacker with artifact-write permission can upload XML documents with internal entity-expansion payloa...

CVE-2026-12975 Apicurio/apicurio-registry: apicurio-registry: unhardened saxparser in content-type detection leads to blind xxe / ssrf / billion-laughs dos

A flaw was found in Apicurio Registry. The ContentTypeUtil.isParsableXml method creates a SAXParserFactory without enabling secure processing features or disabling external entity resolution. An attacker with artifact-write permission or unauthenticated when the registry runs with default...

PT-2026-52629

Name of the Vulnerable Software and Affected Versions Apicurio Registry affected versions not specified Description A flaw exists in the DocumentBuilderAccessor where DOCTYPE declarations are not disabled and FEATURE SECURE PROCESSING is not enabled. Although external DTD and schema access are...

CVE-2026-44020 Docling: Unsafe XML Entity Expansion in USPTO Patent Backend

Docling simplifies document processing by parsing diverse formats and providing integrations with the generative AI ecosystem. From 2.13.0 until 2.74.0, the USPTO patent XML parser used the standard xml.sax.parseString without protection against XML External Entity XXE attacks. An attacker could...

CVE-2026-44020

Docling (USPTO patent XML parsers in the Docling stack) contains an XXE vulnerability in the XML parser used by the USPTO patent formats. From 2.13.0 through 2.74.0, the USPTO patent XML parser used xml.sax.parseString() without protections against external entity references, enabling attackers t...

GHSA-P5WC-9W9R-M232 Ultimate Sitemap Parser (USP): XML Entity Expansion (Billion Laughs) DoS in XMLSitemapParser

XML Entity Expansion Billion Laughs DoS in XMLSitemapParser Summary ultimate-sitemap-parser version 1.8.0 and earlier parse attacker-controlled XML content using Python's xml.parsers.expat without any restriction on DTD declarations or recursive entity references. An attacker who can serve a...

CVE-2026-45771

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.0, FreeSWITCH's bundled XML parser expands nested declarations without a depth or count boun...

CVE-2026-45771 Freeswitch Denial-of-Service in SIP PUBLISH Requests via XML Entity Expansion

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.0, FreeSWITCH's bundled XML parser expands nested declarations without a depth or count boun...

CVE-2026-45771 Freeswitch Denial-of-Service in SIP PUBLISH Requests via XML Entity Expansion

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.0, FreeSWITCH's bundled XML parser expands nested declarations without a depth or count boun...