Is CVE-2026-41239 in the CISA KEV catalog?

No. CVE-2026-41239 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-41239?

CVE-2026-41239 has a CVSS v3 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2026-41239?

CVE-2026-41239 has an EPSS score of 0.22% (12th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-41239?

Upgrade node-dompurify on debian unstable to 3.4.1+dfsg-1 or later.

CVE & CISA-KEV Catalog

CVE-2026-41239

MEDIUM

6.8

CVSS v3

NVD

Description

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Starting in version 1.0.10 and prior to version 3.4.0, `SAFE_FOR_TEMPLATES` strips `{{...}}` expressions from untrusted HTML. This works in string mode but not with `RETURN_DOM` or `RETURN_DOM_FRAGMENT`, allowing XSS via template-evaluating frameworks like Vue 2. Version 3.4.0 patches the issue.

CWE-79Cross-Site Scripting (XSS)CWE-1289

How to fix

Remediation Available

node-dompurifyDebian

Fixed in:3.4.1+dfsg-1CVE-2026-41239

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

0.22%probability of exploitation in 30 days

12thpercentile

Low risk: more likely to be exploited than 12% of all known CVEs.

References

Other references2

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Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.