CVE•Published 2026-07-23•Modified 2026-07-28•0 articles on news•3 live references•NVD data

CVE-2026-65904Cure53 · Dompurify

Vulnerability data via NVD (ingested)

CVSS v3.1

4.7

MEDIUM

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

EPSS percentile

Exploit Prediction Scoring System · top 95% of all CVEs

Weaknesses (CWE)

CWE-754Improper Check for Unusual or Exceptional Conditions

Description

DOMPurify through 3.3.3 fails to sanitize DOM elements passed via IN_PLACE mode when the element originates from a different window/realm (e.g., an iframe's contentDocument). A cross-realm instanceof check in the private _isNode() function returns false for foreign-realm nodes, causing DOMPurify to stringify the element (yielding '[object HTMLDivElement]'), silently reset IN_PLACE to false, and return the unsanitized element unchanged with any XSS payloads intact.

Timeline

Published 2026-07-23

Modified 2026-07-28

External references

NVD MITRE 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). Live host counts are a Premium feature.

Shodan · vuln tag

vuln:CVE-2026-65904

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-2026-65904