NPM: js-yaml: maxTotalMergeKeys does not limit CPU use for empty merge sources

NPM: js-yaml: maxTotalMergeKeys does not limit CPU use for empty merge sources vulnerability discovered by ? in WordPress Npm js-yaml versions = 3.0.0, 3.15.2...

EUVD-2026-69712

js-yaml: maxTotalMergeKeys does not limit CPU use for empty merge sources...

02.aula (1.0.0), 0xrtest (1.0.0) +10781 more potentially affected by CVE-2026-84375 via js-yaml (>=4.0.0, <=4.3.1)

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, =0.0.0-develop-20260120180031, =0.5.6 - @0xr404/0xrtest 1.0.0 and more Source cves: CVE-2026-84375 Source advisory: OSV:GHSA-2883-XCG3-V3HH...

js-yaml: maxTotalMergeKeys does not limit CPU use for empty merge sources

Summary maxTotalMergeKeys does not count empty mappings. An attacker can repeatedly merge a large sequence of them and consume significant CPU without reaching the configured limit. Example yaml arr: &arr , , , ... N empty mappings targets: - : arr repeated K times For every target, the loader...

02-infrastructure (1.0.0), 02vue_toast_demo (>=1.0.0, <=1.0.4) +21433 more potentially affected by CVE-2026-84375 via js-yaml (>=3.0.0, <=3.15.1)

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-2026-84375 Source advisory: OSV:GHSA-2883-XCG3-V3HH...

GHSA-2883-XCG3-V3HH js-yaml: maxTotalMergeKeys does not limit CPU use for empty merge sources

Summary maxTotalMergeKeys does not count empty mappings. An attacker can repeatedly merge a large sequence of them and consume significant CPU without reaching the configured limit. Example yaml arr: &arr , , , ... N empty mappings targets: - : arr repeated K times For every target, the loader...

Security Bulletin: IBM App Connect Enterprise is vulnerable to multiple vulnerabilities due to Nodejs modules js-yaml, thrift and hono

Summary IBM App Connect Enterprise Runtime is vulnerable to multiple vulnerabilities due to Nodejs modules js-yaml, thrift and hono. Vulnerability Details CVEID:CVE-2026-59868 DESCRIPTION: js-yaml is a JavaScript YAML parser and dumper. From 5.0.0 before 5.2.0, when merge keys are enabled, js-yam...

SUSE CVE-2026-84375

js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 until 3.15.2, 4.3.2, and 5.4.1, maxTotalMergeKeys in lib/js-yaml/loader.js and lib/loader.js does not count empty mapping sources while processing the merge key . An attacker can alias a large sequence of empty mappings into many merge...

js-yaml: js-yaml: Denial of Service vulnerability in YAML parsing

A flaw was found in js-yaml, a JavaScript YAML parser. An attacker can exploit this by providing a specially crafted YAML document that causes the parser to perform excessive processing when handling merge keys with empty sources. This can lead to prolonged CPU consumption, effectively causing a...

js-yaml: js-yaml: Denial of Service vulnerability in YAML parsing

A flaw was found in js-yaml, a JavaScript YAML parser. An attacker can exploit this by providing a specially crafted YAML document that causes the parser to perform excessive processing when handling merge keys with empty sources. This can lead to prolonged CPU consumption, effectively causing a...

js-yaml: js-yaml: Denial of Service vulnerability in YAML parsing

A flaw was found in js-yaml, a JavaScript YAML parser. An attacker can exploit this by providing a specially crafted YAML document that causes the parser to perform excessive processing when handling merge keys with empty sources. This can lead to prolonged CPU consumption, effectively causing a...

js-yaml: js-yaml: Denial of Service vulnerability in YAML parsing

A flaw was found in js-yaml, a JavaScript YAML parser. An attacker can exploit this by providing a specially crafted YAML document that causes the parser to perform excessive processing when handling merge keys with empty sources. This can lead to prolonged CPU consumption, effectively causing a...

DoS (Denial of Service) js-yaml Dependency in Jira Service Management Data Center

This High severity DoS Denial of Service vulnerability was introduced in versions 10.0.0, 10.1.1, 10.2.0, 10.3.0, 10.4.0, 10.5.0, 10.6.0, 10.7.1, 11.0.0, 11.1.0, 11.2.0, and 11.3.0 of Jira Service Management Data Center. This DoS Denial of Service vulnerability, with a CVSS Score of 7.5 and a CVS...

Allocation of Resources Without Limits or Throttling

Overview org.webjars.npm:js-yaml is a human-friendly data serialization language. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the merge key handling of the loader, where the maxTotalMergeKeys budget does not count empty mappings...

Allocation of Resources Without Limits or Throttling

Overview js-yaml is a human-friendly data serialization language. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the merge key handling of the loader, where the maxTotalMergeKeys budget does not count empty mappings against its limit. A...

02.aula (1.0.0), 0xrtest (1.0.0) +10781 more potentially affected by CVE-2026-84375 via js-yaml (>=4.0.0, <=4.3.1)

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, =0.0.0-develop-20260120180031, =0.5.6 - @0xr404/0xrtest 1.0.0 and more Source cves: CVE-2026-84375 Source advisory: SNYK:JS-JSYAML-19496768...

02-infrastructure (1.0.0), 02vue_toast_demo (>=1.0.0, <=1.0.4) +21433 more potentially affected by CVE-2026-84375 via js-yaml (>=3.0.0, <=3.15.1)

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-2026-84375 Source advisory: SNYK:JS-JSYAML-19496768...

Linux Distros Unpatched Vulnerability : CVE-2026-84375

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 3.0.0 until 3.15.2, 4.3.2, and 5.4.1, maxTotalMergeKeys in lib/js-yaml/loader.js and lib/loader.js does not...

DEBIAN-CVE-2026-84375

js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 until 3.15.2, 4.3.2, and 5.4.1, maxTotalMergeKeys in lib/js-yaml/loader.js and lib/loader.js does not count empty mapping sources while processing the merge key . An attacker can alias a large sequence of empty mappings into many merge...

CVE-2026-84375

js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 until 3.15.2, 4.3.2, and 5.4.1, maxTotalMergeKeys in lib/js-yaml/loader.js and lib/loader.js does not count empty mapping sources while processing the merge key . An attacker can alias a large sequence of empty mappings into many merge...