CVE-2026-49459 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-49459MEDIUM

cure53 DOMPurify — DOMPurify: IN_PLACE mode preserves attributes of a clobbered root element, allowing XSS via attacker-controlled root DOM

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   R  C  L  L  N    6.1   .0030   23.1     —

AFFECTED
  Product    Versions   Fixed
  DOMPurify  < 3.4.6 –  —

TIMELINE
  May 30  Reserved by GitHub_M
  Jul 14  EXPLOIT PUBLISHED — CVE-2026-49459 (cure53 DOMPurify). Public exploit reference added.
  Jul 14  Published (CNA: GitHub_M)

CWE-79, CWE-693, CWE-1321 · CNA: GitHub_M · CVSS v3.1 · 3 references · NVD status: Analyzed

Description

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Prior to 3.4.6, DOMPurify.sanitize(root, { IN_PLACE: true }) could preserve event-handler attributes on an attacker-controlled <form> root when a descendant name clobbered properties checked by _isClobbered, because _forceRemove no-opped on the parent-less root and _sanitizeAttributes returned early. This issue is fixed in version 3.4.6.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
May 30, 2026	Reserved	Reserved by GitHub_M
July 14, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-49459 (cure53 DOMPurify). Public exploit reference added.
July 14, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
cure53	DOMPurify	—	< 3.4.6	—

Weaknesses

CWE-79 · CWE-693 · CWE-1321

References (3)

https://github.com/cure53/DOMPurify/commit/bb7739e5bccec7e1ab3dae3f3e42d02db3acaaae [Patch]
https://github.com/cure53/DOMPurify/releases/tag/3.4.6 [Release Notes]
https://github.com/cure53/DOMPurify/security/advisories/GHSA-r47g-fvhr-h676 [Exploit, Mitigation, Vendor Advisory]

Authoritative record: CVE-2026-49459 at cve.org

Vendors: cure53

Weaknesses: CWE-79 · CWE-693 · CWE-1321

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-49459 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.