What is CVE-2026-65913?

CVE-2026-65913 is a medium-severity vulnerability in Cure53 Dompurify, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 6.1/10. Published 2026-07-23.

How severe is CVE-2026-65913?

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

Prototype Pollution in Cure53 Dompurify

CVE-2026-65913

DOMPurify before 3.3.2 contains a prototype pollution vulnerability in USE_PROFILES mode that allows attackers to bypass attribute filtering by polluting Array.prototype properties. Attackers can set Array.prototype properties like onclick…

Vulnerability class: Prototype Pollution

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, 3.3.2

Weakness classification (CWE)

CWE-1321 — Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution)

References

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

Frequently asked questions

What is CVE-2026-65913?: CVE-2026-65913 is a medium-severity vulnerability in Cure53 Dompurify, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 6.1/10. Published 2026-07-23.
How severe is CVE-2026-65913?: Medium severity. CVSS v3 base score is 6.1 out of 10.