What is CVE-2026-65902?

CVE-2026-65902 is a medium-severity vulnerability in Cure53 Dompurify, classified under Trust Boundary Violation. CVSS score: 6.1/10. Published 2026-07-23.

How severe is CVE-2026-65902?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Vulnerability in Cure53 Dompurify

CVE-2026-65902

DOMPurify before 3.4.7 (affected versions <= 3.4.5) passes direct references to the module-level DEFAULT_ALLOWED_TAGS and DEFAULT_ALLOWED_ATTR sets to the uponSanitizeElement and uponSanitizeAttribute hooks via data.allowedTags / data.allo…

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Cure53 Dompurify — versions 0, 3.4.7

Weakness classification (CWE)

CWE-501 — Trust Boundary Violation

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-65902?: CVE-2026-65902 is a medium-severity vulnerability in Cure53 Dompurify, classified under Trust Boundary Violation. CVSS score: 6.1/10. Published 2026-07-23.
How severe is CVE-2026-65902?: Medium severity. CVSS v3 base score is 6.1 out of 10.