Kubernetes API Server - YAML Parsing DoS (Billion Laughs)

The Kubernetes API server is vulnerable to a denial of service attack via YAML/JSON parsing. An attacker can send a specially crafted YAML/JSON payload that causes exponential memory consumption Billion Laughs attack, leading to API server crash. id: CVE-2019-11253 info: name: Kubernetes API Serv...

CVE-2026-115506

Versions of libexpat through 2.9.0 are vulnerable to a Denial of Service (DoS) attack caused by a detection delay in the Billion Laughs protection mechanism. The root cause is located in the accountingDiffTolerated() function within xmlparse.c, which identifies entity amplification too late. An a...

CVE-2026-115506 libexpat through 2.9.0 Denial of Service via Billion Laughs Detection Delay

libexpat through 2.9.0 contains a denial of service vulnerability because billion laughs protection in accountingDiffTolerated in xmlparse.c detects entity amplification too late. Attackers can supply a moderately sized XML document with a large DTD and nested entity expansions to consume tens of...

CVE-2026-115506 libexpat through 2.9.0 Denial of Service via Billion Laughs Detection Delay

libexpat through 2.9.0 contains a denial of service vulnerability because billion laughs protection in accountingDiffTolerated in xmlparse.c detects entity amplification too late. Attackers can supply a moderately sized XML document with a large DTD and nested entity expansions to consume tens of...

Rocky Linux 8 [CIQ] Security Update: prometheus-jmx-exporter (crlsa-2020_4807)

The Rocky Linux 8 host has a package installed that is affected by a vulnerability as referenced in the CIQ crlsa-20204807 advisory. snakeyaml: Billion laughs attack via alias feature CVE-2017-18640 Tenable has extracted the preceding description block directly from the CIQ security advisory. Not...

Astra Linux – Vulnerability in c3p0

C3P0 versions less than 0.9.5.4 may be exploited by a “billion laughs attack” when loading XML configuration, due to the lack of protections against recursive entity expansion during the loading of configuration files...

CVE-2026-72923

The OpenAPI.NET SDK contains a useful object model for OpenAPI documents in .NET along with common serializers to extract raw OpenAPI JSON and YAML documents from the model. In Microsoft.OpenApi.Readers versions before 1.6.30 and Microsoft.OpenApi.YamlReader from 2.0.0-preview.11 through 2.11.0 a...

CVE-2026-72923 Microsoft.OpenApi.YamlReader vulnerable to denial of service via YAML alias expansion

The OpenAPI.NET SDK contains a useful object model for OpenAPI documents in .NET along with common serializers to extract raw OpenAPI JSON and YAML documents from the model. In Microsoft.OpenApi.Readers versions before 1.6.30 and Microsoft.OpenApi.YamlReader from 2.0.0-preview.11 through 2.11.0 a...

CVE-2026-72923 Microsoft.OpenApi.YamlReader vulnerable to denial of service via YAML alias expansion

The OpenAPI.NET SDK contains a useful object model for OpenAPI documents in .NET along with common serializers to extract raw OpenAPI JSON and YAML documents from the model. In Microsoft.OpenApi.Readers versions before 1.6.30 and Microsoft.OpenApi.YamlReader from 2.0.0-preview.11 through 2.11.0 a...

CVE-2026-72923 Microsoft.OpenApi.YamlReader vulnerable to denial of service via YAML alias expansion

The OpenAPI.NET SDK contains a useful object model for OpenAPI documents in .NET along with common serializers to extract raw OpenAPI JSON and YAML documents from the model. In Microsoft.OpenApi.Readers versions before 1.6.30 and Microsoft.OpenApi.YamlReader from 2.0.0-preview.11 through 2.11.0 a...

GHSA-97QJ-X29F-37W7 NLTK: Entity-expansion DoS (billion laughs) via remaining raw ElementTree parses

Several XML parsing sites in NLTK still used xml.etree.ElementTree directly, which honours declarations in a document's internal DTD subset. A crafted document a few hundred bytes long can expand to megabytes in memory each nesting level multiplies by ten, a denial-of-service. Affected call sites...

NLTK: Entity-expansion DoS (billion laughs) via remaining raw ElementTree parses

Several XML parsing sites in NLTK still used xml.etree.ElementTree directly, which honours declarations in a document's internal DTD subset. A crafted document a few hundred bytes long can expand to megabytes in memory each nesting level multiplies by ten, a denial-of-service. Affected call sites...

PT-2026-87843

Name of the Vulnerable Software and Affected Versions Microsoft.OpenApi.YamlReader versions 2.0.0-preview.11 through 2.11.x Microsoft.OpenApi.YamlReader versions 3.0.0 through 3.9.x Microsoft.OpenApi.Readers versions prior to 1.6.30 Description Uncontrolled resource consumption occurs when parsin...

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...

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...

CVE-2026-73569

fast-xml-parser allows users to process XML from JS object without C/C++ based libraries or callbacks. From 5.9.3 until 5.10.1, src/xmlparser/OrderedObjParser.js processes multiple DOCTYPE declarations within a single XML document and passes each declaration's entities through addInputEntities...

CVE-2026-73569 fast-xml-parser: Repeated DOCTYPE declarations reset entity expansion limits

fast-xml-parser allows users to process XML from JS object without C/C++ based libraries or callbacks. From 5.9.3 until 5.10.1, src/xmlparser/OrderedObjParser.js processes multiple DOCTYPE declarations within a single XML document and passes each declaration's entities through addInputEntities...

EUVD-2026-58184

fast-xml-parser allows users to process XML from JS object without C/C++ based libraries or callbacks. From 5.9.3 until 5.10.1, src/xmlparser/OrderedObjParser.js processes multiple DOCTYPE declarations within a single XML document and passes each declaration's entities through addInputEntities...

CVE-2026-73569 fast-xml-parser: Repeated DOCTYPE declarations reset entity expansion limits

fast-xml-parser allows users to process XML from JS object without C/C++ based libraries or callbacks. From 5.9.3 until 5.10.1, src/xmlparser/OrderedObjParser.js processes multiple DOCTYPE declarations within a single XML document and passes each declaration's entities through addInputEntities...