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Medium severity6.1NVD Advisory· Published Jul 23, 2026· Updated Jul 28, 2026

CVE-2026-65900

CVE-2026-65900

Description

DOMPurify versions >=3.0.0 and before 3.4.8, when configured with SAFE_FOR_TEMPLATES together with a DOM output mode (RETURN_DOM, RETURN_DOM_FRAGMENT, or IN_PLACE), fail to strip template expressions (e.g. ${evil}, {{evil}}, <%evil%>) inside element content. The final normalization/scrub pass (_scrubTemplateExpressions) uses a NodeIterator and node.normalize() that do not descend into template.content, so expressions that only form after adjacent text nodes merge survive sanitization. This bypasses SAFE_FOR_TEMPLATES and can allow a downstream template engine to evaluate attacker-supplied expressions. The string output path is not affected.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
dompurifynpm
>= 3.0.0, < 3.4.83.4.8

Affected products

31

Patches

Vulnerability mechanics

References

3

News mentions

0

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