CVE•Published 2026-07-14•Modified 2026-07-21•0 articles on news•5 live references•NVD data

CVE-2026-49458Cure53 · Dompurify

Vulnerability data via NVD (ingested)

CVSS v3.1

6.1

MEDIUM

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

EPSS percentile

Exploit Prediction Scoring System · top 79% of all CVEs

Weaknesses (CWE)

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CWE-501Trust Boundary Violation CWE-693Protection Mechanism Failure

Description

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Prior to 3.4.6, DOMPurify.sanitize(node, { IN_PLACE: true }) accepted same-origin foreign-realm DOM nodes while follow-on checks used parent-realm constructors, causing instanceof checks for forms, named node maps, document fragments, and elements to fail and skip clobber, template-content, and shadow-DOM sanitization branches so executable markup could survive. This issue is fixed in version 3.4.6.

Timeline

Published 2026-07-14

Modified 2026-07-21

External references

NVD MITRE Exploit-DB Sploitus VulnCheck

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).

Shodan · vuln tag0 hosts

vuln:CVE-2026-49458

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Cure53 Dompurify"

All exposed Cure53 Dompurify instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Dompurify"

HTTP body or banner mentions "Dompurify" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-49458