How severe is CVE-2026-65913?

CVE-2026-65913 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-65913 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-65913?

CVE-2026-65913 affects Cure53 Dompurify. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-65913?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2026-65913 published?

CVE-2026-65913 was published on 2026-07-23 and last updated on 2026-07-28.

CVE-2026-65913

CVE-2026-65913 is a medium-severity vulnerability in Cure53 Dompurify with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1321.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v4: 5.1
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1321
Affected product: Cure53 Dompurify
Published: 2026-07-23
Last modified: 2026-07-28

Description

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 to true, causing DOMPurify to accept event handlers as allowlisted attributes and resulting in DOM-based XSS when sanitized markup is rendered.

Frequently asked questions

What is 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 to true, causing DOMPurify to accept event handlers as allowlisted attributes and resulting in DOM-based XSS when sanitized markup is rendered.
How severe is CVE-2026-65913?: CVE-2026-65913 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-65913 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-65913?: CVE-2026-65913 affects Cure53 Dompurify. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-65913?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-65913 published?: CVE-2026-65913 was published on 2026-07-23 and last updated on 2026-07-28.

References

Affected products (1)

cpe:2.3:a:cure53:dompurify:*:*:*:*:*:*:*:*

More vulnerabilities in Cure53 Dompurify

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