6.1

CVE-2026-109345: cure53 dompurify Cross-site Scripting

CVSS: 6.1v3.1MediumAwaiting analysis
AliasesGHSA-6688-9rhm-gjv2DEBIAN-CVE-2026-109345UBUNTU-CVE-2026-109345
Published 12-10-2026Last modified 13-10-2026
Open JSON

Vulnerability summary

CVE-2026-109345 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in cure53 dompurify. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 9.7% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (NVD)
EPSS score
0.20%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 12-10-2026
    PublishedVulnerability first disclosed.
  2. 13-10-2026
    Last modifiedVulnerability information updated.

Description

DOMPurify before 3.4.16 contains a cross-site scripting vulnerability that allows attackers to bypass sanitization because IN_PLACE mode returns a force-removed style element whose text content still carries markup. Attackers can supply a style element containing a closing style tag and an img onerror payload, which executes script when the application serializes and re-parses the returned node.

CVSS metrics

7 scores · 4 sources · 2 versions

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

13-10-202619-10-2026
EPSS score
0.20%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Cure531 product
Debian1 product
  • node-dompurifyAll versions (No fix recorded) | < 3.4.16+dfsg-1
Npm1 product
  • dompurify< 3.4.16
Ubuntu1 product
  • node-dompurifyAll versions (No fix recorded)

4 vendors · 4 products

References

9 links