VulnSocial

CVE-2026-47423PoC(cure53 / dompurify)

LOWCVSS 8.2 · HIGH

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

  • Patch cure53 dompurify systems immediately
  • Hunt for exploitation attempts and persistence artifacts
  • Increase monitoring for publicly documented tradecraft

Recommended action window: High priority (within 72h)

NVD description

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. In 3.4.4, DOMPurify allowed selectedcontent by default, allowing browsers to re-clone an XSS payload after sanitization so that unsanitized markup inside <selectedcontent> is returned. This issue is fixed in version 3.4.5.

cure53 CVEsBack to dashboard
2.0/ 10 priority

Sources & remediation

Patch / fix
Exploit / PoC references
Other references
Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • dompurify

Threat summary

  • Public PoC is present in monitored signal
  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • PoC mentioned or linked in 1 signal
  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-05-22); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
cure53
Products
dompurify

1 version affected across 1 product

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-05-22: 1Mentions · 2026-06-05: 1PoC Mentioned / Linked · 2026-05-22: 1Patch / Workaround · 2026-06-05: 1Technical Details · 2026-06-05: 105-2206-05
Signal classification2 categories
PoC
150.0%
Disclosure
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-05-221
PoC1
2026-06-051
Disclosure1
Full discourse2 posts
  • Kabir Acharya@Kabir4charya
    PoC

    My first CVE ever is a bypass for non other than DOMPurify. GitHub is taking their sweet time populating the CVE Record though. Writeup coming soon. https://github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvx CVE-2026-47423

    Post summary

    The tweet announces a new CVE involving a DOMPurify bypass and links to a GitHub advisory where a PoC is likely provided, but no exploit code, active exploitation, patch, or technical details are disclosed.

    000124464
    252 followersView on X
  • BnSnK@BunSnack
    Disclosure

    CVE-2026-47423: DOMPurify 3.4.4 bypass via selectedcontent element. Browser re-clones subtree after sanitization, restoring XSS payload. Bypasses default config on Chromium and WebKit. Patch to 3.4.5. https://nvd.nist.gov/vuln/detail/CVE-2026-47423

    Post summary

    CVE-2026-47423 is a DOMPurify 3.4.4 vulnerability that bypasses sanitization via a selectedcontent element, enabling XSS, and is addressed by patching to version 3.4.5.

    0002044
    6 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appcure53dompurify3.4.4--

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