Dashboard / CVE-2026-59869

CVE-2026-59869

HIGH
MEDIUM Priority: 0.04 BB Relevance: 75/100
Published: 2026-07-08 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: None
I: None
A: High

Description

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 versions 3.15.0 and 4.3.0.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
nodeca js-yaml 3.0.0 – 3.15.0

References & Advisories (5)

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.58%
Raw Score 0.005850
Percentile 47.9%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00585
2026-10-28
0.00585

Intelligence Sources

nvd ref →

External Links