CVE•Published 2026-07-08•Modified 2026-07-10•0 articles on news•4 live references•NVD data
CVE-2026-59870Nodeca · Js-yaml
Vulnerability data via NVD (ingested)
CVSS v3.1
5.3
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS percentile
—
Weaknesses (CWE)
Description
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.
Timeline
Published 2026-07-08
Modified 2026-07-10
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common). Live host counts are a Premium feature.
Shodan · vuln tag
vuln:CVE-2026-59870Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Nodeca Js-yaml"All exposed Nodeca Js-yaml instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Js-yaml"HTTP body or banner mentions "Js-yaml" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-59870Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-59870Censys host search filtered to this CVE id.
grep.app
CVE-2026-59870Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-59870GitHub code search for direct mentions.
Google dork
"CVE-2026-59870" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-59870 on GitHub.
We haven't classified any articles referencing CVE-2026-59870 yet. The external references above still apply.