CVE-2026-45133 Symfony: [Yaml] Harden the parser when handling untrusted input

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, when the parser is exposed to attacker-controlled input, deeply nested mappings or sequences cause both the block-level Parser::parseBlock and inline...

CVE-2026-59869

A flaw was found in js-yaml, a JavaScript YAML parser and dumper. A remote attacker could exploit this vulnerability by providing a specially crafted YAML document containing a chain of mappings with merge keys. This could cause the parser to consume excessive CPU resources, leading to a Denial o...

CVE-2026-58486

HedgeDoc is an open source, real-time, collaborative, markdown notes application. Prior to version 1.11.0, HedgeDoc was vulnerable to a YAML alias bomb due to unsafe processing of the note frontmatter. HedgeDoc parsed frontmatter with js-yaml.load js-yaml v3 via @hedgedoc/meta-marked, which...

CVE-2026-58486 HedgeDoc: Denial-of-service via YAML alias expansion in note frontmatter

HedgeDoc is an open source, real-time, collaborative, markdown notes application. Prior to version 1.11.0, HedgeDoc was vulnerable to a YAML alias bomb due to unsafe processing of the note frontmatter. HedgeDoc parsed frontmatter with js-yaml.load js-yaml v3 via @hedgedoc/meta-marked, which...

CVE-2026-58486 HedgeDoc: Denial-of-service via YAML alias expansion in note frontmatter

HedgeDoc is an open source, real-time, collaborative, markdown notes application. Prior to version 1.11.0, HedgeDoc was vulnerable to a YAML alias bomb due to unsafe processing of the note frontmatter. HedgeDoc parsed frontmatter with js-yaml.load js-yaml v3 via @hedgedoc/meta-marked, which...

CVE-2026-58486

CVE-2026-58486: HedgeDoc prior to 1.11.0 is vulnerable to a YAML alias bomb in note frontmatter. HedgeDoc parses frontmatter with js-yaml.load (js-yaml v3) via @hedgedoc/meta-marked, resolving YAML anchors and potentially expanding a malicious payload into a huge object, consuming CPU on each req...

CVE-2026-58486

HedgeDoc is an open source, real-time, collaborative, markdown notes application. Prior to version 1.11.0, HedgeDoc was vulnerable to a YAML alias bomb due to unsafe processing of the note frontmatter. HedgeDoc parsed frontmatter with js-yaml.load js-yaml v3 via @hedgedoc/meta-marked, which...

Exploit for Improper Input Validation in Pyyaml

Seal Security — Python pip Example A minimal, intentionally...

CVE-2026-15505

A weakness has been identified in vnotex vnote up to 3.20.1. Impacted is an unknown function of the file /src/data/extra/web/js/markdownit.js of the component YAML Frontmatter. This manipulation of the argument pmetaData causes cross site scripting. The attack may be initiated remotely. The vendo...

EUVD-2026-43246

A weakness has been identified in vnotex vnote up to 3.20.1. Impacted is an unknown function of the file /src/data/extra/web/js/markdownit.js of the component YAML Frontmatter. This manipulation of the argument pmetaData causes cross site scripting. The attack may be initiated remotely. The vendo...

CVE-2026-15505 vnotex vnote YAML Frontmatter markdownit.js cross site scripting

A weakness has been identified in vnotex vnote up to 3.20.1. Impacted is an unknown function of the file /src/data/extra/web/js/markdownit.js of the component YAML Frontmatter. This manipulation of the argument pmetaData causes cross site scripting. The attack may be initiated remotely. The vendo...

CVE-2026-15505

The CVE concerns vnotex vnote (up to version 3.20.1) where the YAML Frontmatter component exposes cross-site scripting via the file /src/data/extra/web/js/markdownit.js. The issue arises from manipulation of the argument p_metaData in the YAML Frontmatter code, which can potentially be exploited ...

js-yaml: js-yaml: Denial of Service via crafted YAML documents

A flaw was found in js-yaml, a JavaScript YAML parser and dumper. A remote attacker could exploit this vulnerability by providing a specially crafted YAML document containing a chain of mappings with merge keys. This could cause the parser to consume excessive CPU resources, leading to a Denial o...

js-yaml: js-yaml: Denial of Service via crafted YAML documents

A flaw was found in js-yaml, a JavaScript YAML parser and dumper. A remote attacker could exploit this vulnerability by providing a specially crafted YAML document containing a chain of mappings with merge keys. This could cause the parser to consume excessive CPU resources, leading to a Denial o...

js-yaml: js-yaml: Denial of Service via crafted YAML merge keys

A flaw was found in js-yaml, a JavaScript YAML parser and dumper. A remote attacker can exploit this vulnerability by providing a specially crafted YAML document that repeatedly uses the same alias in a merge sequence. This can lead to algorithmic CPU exhaustion, causing the Node.js worker or eve...

js-yaml: js-yaml: Denial of Service via crafted YAML documents

A flaw was found in js-yaml, a JavaScript YAML parser and dumper. A remote attacker could exploit this vulnerability by providing a specially crafted YAML document containing a chain of mappings with merge keys. This could cause the parser to consume excessive CPU resources, leading to a Denial o...

CVE-2026-44795

Spinnaker is an open source, multi-cloud continuous delivery platform. Prior to 2026.1.0, 2026.0.3, 2025.4.4, and 2025.3.3, unsafe YAML processing bypasses safe deserialization when using CloudFormation deployments or CloudFoundry baking. The use of a non-safe constructor allows arbitrary loading...

CVE-2026-55175

Spinnaker CVE-2026-55175 affects Rosco/Kustomize bake operations where unsafe YAML tag processing in rosco manifests can lead to remote code execution on rosco pods. Affected versions are prior to 2026.1.1, 2026.0.3, 2025.4.4, and 2025.3.4 across release lines; fixes are available in 2026.1.1, 20...

EUVD-2026-43087

Spinnaker is an open source, multi-cloud continuous delivery platform. Prior to versions 2026.1.1, 2026.0.3, 2025.4.4, and 2025.3.4 on their respective release lines, Kustomize bake operations allow unsafe YAML tag processing in rosco manifests. This can lead to remote code execution on rosco pod...

CVE-2026-55175 Spinnaker: Improper yaml processing on kustomize bake operations

Spinnaker is an open source, multi-cloud continuous delivery platform. Prior to versions 2026.1.1, 2026.0.3, 2025.4.4, and 2025.3.4 on their respective release lines, Kustomize bake operations allow unsafe YAML tag processing in rosco manifests. This can lead to remote code execution on rosco pod...