CVE-2026-59868 js-yaml: YAML merge-key chains can force quadratic CPU consumption

js-yaml is a JavaScript YAML parser and dumper. From 5.0.0 before 5.2.0, when merge keys are enabled, js-yaml can spend quadratic CPU time parsing a document whose size grows only linearly when a chain of mappings uses merge keys where each mapping merges the previous one. This issue is fixed in...

CVE-2026-59868

The CVE-2026-59868 Issue: js-yaml (JavaScript YAML parser/dumper) is vulnerable when merge keys are enabled. From versions 5.0.0 up to 5.2.0, a chain of mappings using merge keys can cause quadratic CPU time on documents that grow linearly, leading to DoS under some inputs. A fix was released in ...

CVE-2026-59869 js-yaml: YAML merge-key chains can force quadratic CPU consumption

js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 before 3.15.0 and from 4.0.0 before 4.3.0, js-yaml can spend quadratic CPU time parsing a document whose size grows only linearly when a chain of mappings uses merge keys where each mapping merges the previous one. This issue is fixed in...

CVE-2026-59869

js-yaml (JavaScript YAML parser) is affected by a resource-consumption issue in merge-key chains that can cause quadratic CPU time as documents grow linearly. Affected versions are 3.0.0–3.14.x and 4.0.0–4.2.x; the issue is fixed in 3.15.0 and 4.3.0. Impact is described as high availability (A:H)...

CVE-2026-59869 js-yaml: YAML merge-key chains can force quadratic CPU consumption

js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 before 3.15.0 and from 4.0.0 before 4.3.0, js-yaml can spend quadratic CPU time parsing a document whose size grows only linearly when a chain of mappings uses merge keys where each mapping merges the previous one. This issue is fixed in...

CVE-2026-59869

js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 before 3.15.0 and from 4.0.0 before 4.3.0, js-yaml can spend quadratic CPU time parsing a document whose size grows only linearly when a chain of mappings uses merge keys where each mapping merges the previous one. This issue is fixed in...

CVE-2026-59869 js-yaml: YAML merge-key chains can force quadratic CPU consumption

js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 before 3.15.0 and from 4.0.0 before 4.3.0, js-yaml can spend quadratic CPU time parsing a document whose size grows only linearly when a chain of mappings uses merge keys where each mapping merges the previous one. This issue is fixed in...

CVE-2026-59869

js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 before 3.15.0 and from 4.0.0 before 4.3.0, js-yaml can spend quadratic CPU time parsing a document whose size grows only linearly when a chain of mappings uses merge keys where each mapping merges the previous one. This issue is fixed in...

CVE-2026-59870

js-yaml is a JavaScript YAML parser and dumper. From 5.0.0 before 5.2.1, YAML11SCHEMA support for the !!omap tag in src/tag/sequence/omap.ts uses omapTag.addItem to perform a linear duplicate-key scan on every insertion, causing On^2 CPU consumption when yaml.load parses a crafted ordered-map...

CVE-2026-59870

CVE-2026-59870 affects js-yaml prior to 5.2.1. The YAML11_SCHEMA’s handling of the !!omap tag in omap.ts performs a linear duplicate-key scan on each insertion, causing O(n^2) CPU usage when yaml.load() parses crafted ordered-map documents. Red Hat and NVD entries confirm this results in CPU-inte...

CVE-2026-59870 js-yaml quadratic-complexity denial of service via YAML11_SCHEMA !!omap parsing

js-yaml is a JavaScript YAML parser and dumper. From 5.0.0 before 5.2.1, YAML11SCHEMA support for the !!omap tag in src/tag/sequence/omap.ts uses omapTag.addItem to perform a linear duplicate-key scan on every insertion, causing On^2 CPU consumption when yaml.load parses a crafted ordered-map...

CVE-2026-59870 js-yaml quadratic-complexity denial of service via YAML11_SCHEMA !!omap parsing

js-yaml is a JavaScript YAML parser and dumper. From 5.0.0 before 5.2.1, YAML11SCHEMA support for the !!omap tag in src/tag/sequence/omap.ts uses omapTag.addItem to perform a linear duplicate-key scan on every insertion, causing On^2 CPU consumption when yaml.load parses a crafted ordered-map...

CVE-2026-59870 js-yaml quadratic-complexity denial of service via YAML11_SCHEMA !!omap parsing

js-yaml is a JavaScript YAML parser and dumper. From 5.0.0 before 5.2.1, YAML11SCHEMA support for the !!omap tag in src/tag/sequence/omap.ts uses omapTag.addItem to perform a linear duplicate-key scan on every insertion, causing On^2 CPU consumption when yaml.load parses a crafted ordered-map...

PT-2026-56489

Name of the Vulnerable Software and Affected Versions js-yaml versions 5.0.0 through 5.1.x Description When merge keys are enabled, the parser can consume quadratic CPU time while processing a document. This occurs when a chain of mappings uses merge keys where each mapping merges the previous on...

PT-2026-56491

Name of the Vulnerable Software and Affected Versions js-yaml versions 5.0.0 through 5.2.0 Description Support for the !!omap tag in YAML11 SCHEMA within src/tag/sequence/omap.ts uses the omapTag.addItem function to perform a linear duplicate-key scan during every insertion. This results in On^2...

PT-2026-56490

Name of the Vulnerable Software and Affected Versions js-yaml versions 3.0.0 through 3.14.x js-yaml versions 4.0.0 through 4.2.x Description js-yaml can consume quadratic CPU time when parsing a document that grows linearly in size. This occurs when a chain of mappings utilizes merge keys, where...

OPENSUSE-SU-2026:21251-1 Security update for alloy

This update for alloy fixes the following issues: Update to version 1.17.0. Security issues fixed: - CVE-2026-25680: golang.org/x/net/html: parsing arbitrary HTML can consume excessive CPU time, possibly leading to denial of service bsc1267185. - CVE-2026-25681: golang.org/x/net/html: parsing...

Salt junos Module Vulnerable to Code Injection via Specially Crafted YAML Payload

Salt's junos execution module contained an unsafe YAML decode/load usage. A specially crafted YAML payload processed by the junos module could lead to unintended code execution under the context of the Salt process...

docling-core vulnerable to Remote Code Execution via unsafe PyYAML usage

ImpactA PyYAML-related Remote Code Execution RCE vulnerability, namely CVE-2020-14343, is exposed in docling-core =2.21.0, 2.48.4 and, specifically only if the application uses pyyaml 5.4 and invokes doclingcore.types.doc.DoclingDocument.loadfromyaml passing it untrusted YAML data. PatchesThe...

PYSEC-2026-1313 docling-core vulnerable to Remote Code Execution via unsafe PyYAML usage

Impact A PyYAML-related Remote Code Execution RCE vulnerability, namely CVE-2020-14343, is exposed in docling-core =2.21.0, 2.48.4 and, specifically only if the application uses pyyaml 5.4 and invokes doclingcore.types.doc.DoclingDocument.loadfromyaml passing it untrusted YAML data. Patches The...