Cross-site Scripting (XSS)

Overview dompurify is a DOM-only XSS sanitizer for HTML, MathML and SVG. Affected versions of this package are vulnerable to Cross-site Scripting XSS in the INPLACE function when handling a element containing an element with an attached shadow DOM. An attacker can execute arbitrary scripts in the...

DOMPurify IN_PLACE Sanitization Bypass via Attached Shadow Root Inside <template>.content

If the HTML you give it contains a element, and inside that template there's an element with a shadow DOM attached to it, DOMPurify quietly skips over the shadow contents. Whatever the attacker put in there - an image with an onerror handler, a link with a javascript: URL, even a full script -...

1router (>=0.3.96, <=1.0.2), 8router (>=0.5.12, <=0.5.24) +2153 more potentially affected by CVE-2026-49978 via dompurify (>=3.0.0, <=3.4.6)

dompurify NPM version =3.0.0, =0.3.96, =0.5.12, =0.3.33, =0.5.0, =0.4.71, =1.0.0, =1.5.1, =0.18.0-beta.0, =0.1.0-alpha.1, =0.1.0, =0.1.0, =0.0.0-dev-20240828032938, =0.2.8-experimental.0, =0.2.10 and more Source cves: CVE-2026-49978 Source advisory: OSV:GHSA-RP9W-3FW7-7CWQ...

1router (>=0.3.96, <=1.0.2), 8router (>=0.5.12, <=0.5.24) +2153 more potentially affected by CVE-2026-49978 via dompurify (>=3.0.0, <=3.4.6)

dompurify NPM version =3.0.0, =0.3.96, =0.5.12, =0.3.33, =0.5.0, =0.4.71, =1.0.0, =1.5.1, =0.18.0-beta.0, =0.1.0-alpha.1, =0.1.0, =0.1.0, =0.0.0-dev-20240828032938, =0.2.8-experimental.0, =0.2.10 and more Source cves: CVE-2026-49978 Source advisory: SNYK:JS-DOMPURIFY-17344504...

NPM: DOMPurify IN_PLACE Sanitization Bypass via Attached Shadow Root Inside <template>.content

NPM: DOMPurify INPLACE Sanitization Bypass via Attached Shadow Root Inside .content vulnerability discovered by ? in WordPress Npm dompurify versions = 3.4.6...

GHSA-RP9W-3FW7-7CWQ DOMPurify IN_PLACE Sanitization Bypass via Attached Shadow Root Inside <template>.content

If the HTML you give it contains a element, and inside that template there's an element with a shadow DOM attached to it, DOMPurify quietly skips over the shadow contents. Whatever the attacker put in there - an image with an onerror handler, a link with a javascript: URL, even a full script -...

GHSA-X4VX-RJVF-J5P4 DOMPurify: `IN_PLACE` mode trusts attacker-controlled `nodeName` on live non-form nodes, allowing script retention and XSS via attacker-supplied DOM objects

Summary When DOMPurify.sanitizeroot, INPLACE: true is called on an attacker-supplied live DOM node, DOMPurify still trusts currentNode.nodeName for non-form nodes in the main sanitizeElements pipeline. A real child node whose observable nodeName is attacker-controlled can therefore be misclassifi...

DOMPurify: `IN_PLACE` mode trusts attacker-controlled `nodeName` on live non-form nodes, allowing script retention and XSS via attacker-supplied DOM objects

Summary When DOMPurify.sanitizeroot, INPLACE: true is called on an attacker-supplied live DOM node, DOMPurify still trusts currentNode.nodeName for non-form nodes in the main sanitizeElements pipeline. A real child node whose observable nodeName is attacker-controlled can therefore be misclassifi...

1router (>=0.3.96, <=1.0.2), 8router (>=0.5.12, <=0.5.24) +2162 more potentially affected by unknown CVE via dompurify (>=3.0.0, <=3.4.7)

dompurify NPM version =3.0.0, =0.3.96, =0.5.12, =0.3.33, =0.5.0, =0.4.71, =1.0.0, =1.5.1, =0.18.0-beta.0, =0.1.0-alpha.1, =0.1.0, =0.1.0, =0.0.0-dev-20240828032938, =0.2.8-experimental.0, =0.2.10 and more Source cves: unknown CVE Source advisory: SNYK:JS-DOMPURIFY-17342528...

Cross-site Scripting (XSS)

Overview org.webjars.npm:dompurify is a DOM-only XSS sanitizer for HTML, MathML and SVG. Affected versions of this package are vulnerable to Cross-site Scripting XSS in the INPLACE process when attacker-controlled live DOM nodes are sanitized. An attacker can execute arbitrary scripts in the...

1router (>=0.3.96, <=1.0.2), 8router (>=0.5.12, <=0.5.24) +2153 more potentially affected by CVE-2026-65901 via dompurify (>=3.0.0, <=3.4.6)

dompurify NPM version =3.0.0, =0.3.96, =0.5.12, =0.3.33, =0.5.0, =0.4.71, =1.0.0, =1.5.1, =0.18.0-beta.0, =0.1.0-alpha.1, =0.1.0, =0.1.0, =0.0.0-dev-20240828032938, =0.2.8-experimental.0, =0.2.10 and more Source cves: CVE-2026-65901 Source advisory: OSV:GHSA-X4VX-RJVF-J5P4...

Trust Boundary Violation

Overview org.webjars.npm:dompurify is a DOM-only XSS sanitizer for HTML, MathML and SVG. Affected versions of this package are vulnerable to Trust Boundary Violation through the mutation of data.allowedTags or data.allowedAttributes in hooks, which directly alters the global default sets used for...

DOMPurify: Hook mutation of `data.allowedTags` / `data.allowedAttributes` permanently pollutes `DEFAULT_ALLOWED_TAGS` / `DEFAULT_ALLOWED_ATTR`

Hook mutation of data.allowedTags / data.allowedAttributes permanently pollutes DEFAULTALLOWEDTAGS / DEFAULTALLOWEDATTR CWE: CWE-501 Trust Boundary Violation — hook-scoped mutation leaks to global default sets via CWE-693 Protection Mechanism Failure — the default allow-list is silently widened f...

1router (>=0.3.96, <=1.0.2), 8router (>=0.5.12, <=0.5.24) +2153 more potentially affected by unknown CVE via dompurify (>=3.0.0, <=3.4.6)

dompurify NPM version =3.0.0, =0.3.96, =0.5.12, =0.3.33, =0.5.0, =0.4.71, =1.0.0, =1.5.1, =0.18.0-beta.0, =0.1.0-alpha.1, =0.1.0, =0.1.0, =0.0.0-dev-20240828032938, =0.2.8-experimental.0, =0.2.10 and more Source cves: unknown CVE Source advisory: SNYK:JS-DOMPURIFY-17344516...

GHSA-76MC-F452-CXCM DOMPurify: Hook mutation of `data.allowedTags` / `data.allowedAttributes` permanently pollutes `DEFAULT_ALLOWED_TAGS` / `DEFAULT_ALLOWED_ATTR`

Hook mutation of data.allowedTags / data.allowedAttributes permanently pollutes DEFAULTALLOWEDTAGS / DEFAULTALLOWEDATTR CWE: CWE-501 Trust Boundary Violation — hook-scoped mutation leaks to global default sets via CWE-693 Protection Mechanism Failure — the default allow-list is silently widened f...

1router (>=0.3.96, <=1.0.2), 8router (>=0.5.12, <=0.5.24) +2153 more potentially affected by CVE-2026-65902 via dompurify (>=3.0.0, <=3.4.6)

dompurify NPM version =3.0.0, =0.3.96, =0.5.12, =0.3.33, =0.5.0, =0.4.71, =1.0.0, =1.5.1, =0.18.0-beta.0, =0.1.0-alpha.1, =0.1.0, =0.1.0, =0.0.0-dev-20240828032938, =0.2.8-experimental.0, =0.2.10 and more Source cves: CVE-2026-65902 Source advisory: OSV:GHSA-76MC-F452-CXCM...

1router (>=0.3.96, <=1.0.2), 8router (>=0.5.12, <=0.5.24) +2153 more potentially affected by CVE-2026-49458 via dompurify (>=3.0.0, <=3.4.5)

dompurify NPM version =3.0.0, =0.3.96, =0.5.12, =0.3.33, =0.5.0, =0.4.71, =1.0.0, =1.5.1, =0.18.0-beta.0, =0.1.0-alpha.1, =0.1.0, =0.1.0, =0.0.0-dev-20240828032938, =0.2.8-experimental.0, =0.2.10 and more Source cves: CVE-2026-49458 Source advisory: OSV:GHSA-HPCV-96WG-7VJ8...

1router (>=0.3.96, <=1.0.2), 8router (>=0.5.12, <=0.5.24) +2153 more potentially affected by CVE-2026-49458 via dompurify (>=3.0.0, <=3.4.5)

dompurify NPM version =3.0.0, =0.3.96, =0.5.12, =0.3.33, =0.5.0, =0.4.71, =1.0.0, =1.5.1, =0.18.0-beta.0, =0.1.0-alpha.1, =0.1.0, =0.1.0, =0.0.0-dev-20240828032938, =0.2.8-experimental.0, =0.2.10 and more Source cves: CVE-2026-49458 Source advisory: SNYK:JS-DOMPURIFY-17344526...

Trust Boundary Violation

Overview org.webjars.npm:dompurify is a DOM-only XSS sanitizer for HTML, MathML and SVG. Affected versions of this package are vulnerable to Trust Boundary Violation in the sanitize function when handling DOM nodes from a different same-origin realm due to improper realm-bound instanceof checks. ...

DOMPurify: Cross-realm IN_PLACE sanitization leaves executable markup intact via realm-bound `instanceof` checks

Cross-realm INPLACE sanitization leaves executable markup intact via realm-bound instanceof checks CWE: CWE-79 XSS — Improper Neutralization of Input During Web Page Generation via CWE-693 Protection Mechanism Failure — realm-bound instanceof checks fail-open on foreign-realm DOM nodes and CWE-50...