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Vulnerability Details CVE-2026-65899

DOMPurify 3.0.0 before 3.4.9 does not reset the retained Trusted Types policy when clearConfig() is called, so a DOMPurify instance reused across trust boundaries stays bound to a previously supplied TRUSTED_TYPES_POLICY. A later caller that requests RETURN_TRUSTED_TYPE output receives a TrustedHTML object created by the old (potentially unsafe) policy rather than a clean default, which can lead to script execution at a Trusted Types sink. Passing TRUSTED_TYPES_POLICY: null on the later call also does not clear the retained policy.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.002

EPSS Ranking 12.0%

CVSS Severity

CVSS v3 Score 6.1

References

Products affected by CVE-2026-65899

Cure53 » Dompurify » Version: 3.0.0

cpe:2.3:a:cure53:dompurify:3.0.0
Cure53 » Dompurify » Version: 3.0.1

cpe:2.3:a:cure53:dompurify:3.0.1
Cure53 » Dompurify » Version: 3.0.10

cpe:2.3:a:cure53:dompurify:3.0.10
Cure53 » Dompurify » Version: 3.0.11

cpe:2.3:a:cure53:dompurify:3.0.11
Cure53 » Dompurify » Version: 3.0.2

cpe:2.3:a:cure53:dompurify:3.0.2
Cure53 » Dompurify » Version: 3.0.3

cpe:2.3:a:cure53:dompurify:3.0.3
Cure53 » Dompurify » Version: 3.0.4

cpe:2.3:a:cure53:dompurify:3.0.4
Cure53 » Dompurify » Version: 3.0.5

cpe:2.3:a:cure53:dompurify:3.0.5
Cure53 » Dompurify » Version: 3.0.6

cpe:2.3:a:cure53:dompurify:3.0.6
Cure53 » Dompurify » Version: 3.0.7

cpe:2.3:a:cure53:dompurify:3.0.7
Cure53 » Dompurify » Version: 3.0.8

cpe:2.3:a:cure53:dompurify:3.0.8
Cure53 » Dompurify » Version: 3.0.9

cpe:2.3:a:cure53:dompurify:3.0.9
Cure53 » Dompurify » Version: 3.1.0

cpe:2.3:a:cure53:dompurify:3.1.0
Cure53 » Dompurify » Version: 3.1.1

cpe:2.3:a:cure53:dompurify:3.1.1
Cure53 » Dompurify » Version: 3.1.2

cpe:2.3:a:cure53:dompurify:3.1.2
Cure53 » Dompurify » Version: 3.1.3

cpe:2.3:a:cure53:dompurify:3.1.3
Cure53 » Dompurify » Version: 3.1.4

cpe:2.3:a:cure53:dompurify:3.1.4
Cure53 » Dompurify » Version: 3.1.5

cpe:2.3:a:cure53:dompurify:3.1.5
Cure53 » Dompurify » Version: 3.1.6

cpe:2.3:a:cure53:dompurify:3.1.6
Cure53 » Dompurify » Version: 3.1.7

cpe:2.3:a:cure53:dompurify:3.1.7
Cure53 » Dompurify » Version: 3.2.0

cpe:2.3:a:cure53:dompurify:3.2.0
Cure53 » Dompurify » Version: 3.2.1

cpe:2.3:a:cure53:dompurify:3.2.1
Cure53 » Dompurify » Version: 3.2.2

cpe:2.3:a:cure53:dompurify:3.2.2
Cure53 » Dompurify » Version: 3.2.3

cpe:2.3:a:cure53:dompurify:3.2.3
Cure53 » Dompurify » Version: 3.2.4

cpe:2.3:a:cure53:dompurify:3.2.4
Cure53 » Dompurify » Version: 3.2.5

cpe:2.3:a:cure53:dompurify:3.2.5
Cure53 » Dompurify » Version: 3.2.6

cpe:2.3:a:cure53:dompurify:3.2.6
Cure53 » Dompurify » Version: 3.2.7

cpe:2.3:a:cure53:dompurify:3.2.7
Cure53 » Dompurify » Version: 3.3.0

cpe:2.3:a:cure53:dompurify:3.3.0
Cure53 » Dompurify » Version: 3.3.1

cpe:2.3:a:cure53:dompurify:3.3.1
Cure53 » Dompurify » Version: 3.3.2

cpe:2.3:a:cure53:dompurify:3.3.2
Cure53 » Dompurify » Version: 3.3.3

cpe:2.3:a:cure53:dompurify:3.3.3
Cure53 » Dompurify » Version: 3.4.0

cpe:2.3:a:cure53:dompurify:3.4.0
Cure53 » Dompurify » Version: 3.4.1

cpe:2.3:a:cure53:dompurify:3.4.1
Cure53 » Dompurify » Version: 3.4.2

cpe:2.3:a:cure53:dompurify:3.4.2
Cure53 » Dompurify » Version: 3.4.3

cpe:2.3:a:cure53:dompurify:3.4.3
Cure53 » Dompurify » Version: 3.4.4

cpe:2.3:a:cure53:dompurify:3.4.4
Cure53 » Dompurify » Version: 3.4.5

cpe:2.3:a:cure53:dompurify:3.4.5
Cure53 » Dompurify » Version: 3.4.6

cpe:2.3:a:cure53:dompurify:3.4.6
Cure53 » Dompurify » Version: 3.4.7

cpe:2.3:a:cure53:dompurify:3.4.7
Cure53 » Dompurify » Version: 3.4.8

cpe:2.3:a:cure53:dompurify:3.4.8

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Vulnerability Details CVE-2026-65899

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