ByteOS Network

NVD Vulnerability Details :

CVE-2026-59870

Undergoing Analysis

Source-security-advisories@github.com

Published At-08 Jul, 2026 | 16:16

Updated At-10 Jul, 2026 | 18:01

js-yaml is a JavaScript YAML parser and dumper. From 5.0.0 before 5.2.1, YAML11_SCHEMA 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 O(n^2) CPU consumption when yaml.load() parses a crafted ordered-map document. This issue is fixed in version 5.2.1.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	3.1	5.3	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
			N/A

Type: Secondary

Version: 3.1

Base score: 5.3

Base severity: MEDIUM

Vector:

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Type: N/A

Version:

Base score:

Base severity: N/A

Vector:

Weaknesses

CWE ID	Type	Source
CWE-407	Secondary	security-advisories@github.com

CWE ID: CWE-407

Type: Secondary

Source: security-advisories@github.com

References

Hyperlink	Source	Resource
https://github.com/nodeca/js-yaml/commit/39f3211a2f01b3c6982710cf21434ab7060acefe	security-advisories@github.com	N/A
https://github.com/nodeca/js-yaml/releases/tag/5.2.1	security-advisories@github.com	N/A
https://github.com/nodeca/js-yaml/security/advisories/GHSA-724g-mxrg-4qvm	security-advisories@github.com	N/A
https://github.com/nodeca/js-yaml/security/advisories/GHSA-724g-mxrg-4qvm	134c704f-9b21-4f2e-91b3-4a467353bcc0	N/A