8.2

CVE-2026-47423: cure53 dompurify Cross-site Scripting

CVSS: 8.2v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-47423DEBIAN-CVE-2026-47423GHSA-87xg-pxx2-7hvx
Published 14-07-2026Last modified 16-07-2026
Open JSON

Vulnerability summary

CVE-2026-47423 is a high (CVSS 8.2) Cross-site Scripting vulnerability in cure53 dompurify. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 33.8% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
43/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.2/10
010
High · v3.1 (CVE.org)
EPSS score
0.41%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 1
RHSA-2026:10999

Timeline

  1. 14-07-2026
    PublishedVulnerability first disclosed.
  2. 16-07-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.41%

Chance of exploitation in the next 30 days

Percentile

34%

Versus all other CVEs

30-day change

0.00 pp

From 0.41% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.41%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Dompurify

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Ubuntu2 products
  • dompurify.jsAll versions (No fix recorded)
  • node-dompurifyAll versions (No fix recorded)
Cure531 product
Debian1 product
  • node-dompurifyAll versions (No fix recorded) | < 3.4.5+dfsg-1
Npm1 product
  • dompurify≥ 3.4.4, < 3.4.5

4 vendors · 5 products

References

7 links