@20206205tech/nestjs-auth (>=1.0.0, <=1.4.1), @20206205tech/nestjs-common (>=0.3.0, <=0.11.4) +726 more potentially affected by unknown CVE via js-yaml (>=5.0.0, <=5.2.1)

js-yaml NPM version =5.0.0, =1.0.0, =0.3.0, =1.0.0, =0.0.1, =0.0.1, =0.0.1, =1.1.0, =1.1.0, =16.21.1, =1.9.29, =6.29.8, =3.4.141, =7.1.20, =2.2.62, =1.5.3, =1.5.6 and more Source cves: unknown CVE Source advisory: SNYK:JS-JSYAML-18313070...

@20206205tech/nestjs-auth (>=1.0.0, <=1.4.1), @20206205tech/nestjs-common (>=0.3.0, <=0.11.4) +726 more potentially affected by CVE-2026-73643 via js-yaml (>=5.0.0, <=5.2.1)

js-yaml NPM version =5.0.0, =1.0.0, =0.3.0, =1.0.0, =0.0.1, =0.0.1, =0.0.1, =1.1.0, =1.1.0, =16.21.1, =1.9.29, =6.29.8, =3.4.141, =7.1.20, =2.2.62, =1.5.3, =1.5.6 and more Source cves: CVE-2026-73643 Source advisory: OSV:GHSA-PM4M-PH32-GHV5...

GHSA-PM4M-PH32-GHV5 js-yaml: Exponential parsing time in flow collections leads to denial of service

Summary Parsing a small YAML document can take exponential time. An application that calls load or loadAll on untrusted input can be hung by a payload under 200 bytes. Details When an entry in a flow sequence turns out to be a key: value pair, the parser rewinds and parses that entry a second tim...

@adobe/helix-docx2md (1.9.29), @adobe/helix-importer (>=3.4.141, <=3.4.143) +32 more potentially affected by CVE-2026-59868 via js-yaml (>=5.0.0, <=5.1.0)

js-yaml NPM version =5.0.0, =3.4.141, =2.2.62, =1.0.8, =0.2.12, =0.2.12, =0.2.12, =0.2.13, =0.2.12, =0.2.16, =0.2.14, =0.2.12, =0.2.17 and more Source cves: CVE-2026-59868 Source advisory: OSV:GHSA-G796-FGMG-93MV...

02-infrastructure (1.0.0), 02vue_toast_demo (>=1.0.0, <=1.0.4) +21414 more potentially affected by CVE-2026-59869 via js-yaml (>=3.0.0, <=3.14.2)

js-yaml NPM version =3.0.0, =1.0.0, =1.0.4, =5.0.0, =1.0.3, =2.0.0, =0.0.1, =0.0.2 - 23g-base-css 1.0.0 and more Source cves: CVE-2026-59869 Source advisory: OSV:GHSA-52CP-R559-CP3M...

02.aula (1.0.0), 0xrtest (1.0.0) +10564 more potentially affected by CVE-2026-59869 via js-yaml (>=4.0.0, <=4.2.0)

js-yaml NPM version =4.0.0, =0.2.0, =0.0.3, =4.11.0, =0.0.1, =1.1.9, =0.1.23, =0.1.4, =6.1.5, =0.2.0, =0.14.0 and more Source cves: CVE-2026-59869 Source advisory: OSV:GHSA-52CP-R559-CP3M...

@adobe/aem-cli (>=16.21.1, <=16.21.2), @adobe/helix-docx2md (>=1.9.29, <=1.9.30) +48 more potentially affected by CVE-2026-59870 via js-yaml (>=5.0.0, <=5.2.0)

js-yaml NPM version =5.0.0, =16.21.1, =1.9.29, =3.4.141, =7.1.20, =2.2.62, =1.5.3, =1.0.8, =1.0.0-alpha.1, =0.0.0-next-20260630092247, =0.0.0-next-20260630092247, =0.0.0-next-20260813201118 and more Source cves: CVE-2026-59870 Source advisory: OSV:GHSA-724G-MXRG-4QVM...

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: 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...

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...

CVE-2026-59870

A flaw was found in js-yaml, a JavaScript YAML YAML Ain't Markup Language parser. An attacker could exploit this by providing a specially crafted YAML ordered-map document. This could lead to excessive CPU consumption, resulting in a denial of service DoS for applications processing the malicious...

Linux Distros Unpatched Vulnerability : CVE-2026-59868

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

@adobe/helix-docx2md (1.9.29), @adobe/helix-importer (>=3.4.141, <=3.4.143) +32 more potentially affected by CVE-2026-59868 +1 more via js-yaml (>=5.0.0, <=5.1.0)

js-yaml NPM version =5.0.0, =3.4.141, =2.2.62, =1.0.8, =0.2.12, =0.2.12, =0.2.12, =0.2.13, =0.2.12, =0.2.16, =0.2.14, =0.2.12, =0.2.17 and more Source cves: CVE-2026-59868, CVE-2026-59869 Source advisory: SNYK:JS-JSYAML-17900092...

Inefficient Algorithmic Complexity

Overview js-yaml is a human-friendly data serialization language. Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity in the merge key handling during YAML parsing, where each mapping in a chain re-enumerates the keys inherited from the previous mapping. An...

02-infrastructure (1.0.0), 02vue_toast_demo (>=1.0.0, <=1.0.4) +21414 more potentially affected by CVE-2026-59869 via js-yaml (>=3.0.0, <=3.14.2)

js-yaml NPM version =3.0.0, =1.0.0, =1.0.4, =5.0.0, =1.0.3, =2.0.0, =0.0.1, =0.0.2 - 23g-base-css 1.0.0 and more Source cves: CVE-2026-59869 Source advisory: SNYK:JS-JSYAML-17900054...

Inefficient Algorithmic Complexity

Overview org.webjars.npm:js-yaml is a human-friendly data serialization language. Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity in merge key handling during YAML parsing, where each mapping in a chain re-enumerates the keys inherited from the previous...

Inefficient Algorithmic Complexity

Overview js-yaml is a human-friendly data serialization language. Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity in merge key handling during YAML parsing, where each mapping in a chain re-enumerates the keys inherited from the previous mapping. An attacker...

02.aula (1.0.0), 0xrtest (1.0.0) +10564 more potentially affected by CVE-2026-59869 via js-yaml (>=4.0.0, <=4.2.0)

js-yaml NPM version =4.0.0, =0.2.0, =0.0.3, =4.11.0, =0.0.1, =1.1.9, =0.1.23, =0.1.4, =6.1.5, =0.2.0, =0.14.0 and more Source cves: CVE-2026-59869 Source advisory: SNYK:JS-JSYAML-17900054...

Inefficient Algorithmic Complexity

Overview js-yaml is a human-friendly data serialization language. Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity in the omapTag.addItem function of src/tag/sequence/omap.ts, which performs a linear scan for duplicate keys on every insertion into an ordered...