CVE-2026-66829

The CVE affects html_sanitize_ex (HtmlSanitizeEx.html5/1) where attacker-supplied meta refresh elements survive sanitization. The root cause is that a meta element can apply document-wide directives, enabling open redirects to user-chosen sites via a tag. Affected versions: html_sanitize_ex from...

CVE-2026-66829 html_sanitize_ex HTML5 scrubber keeps attacker-supplied meta refresh, allowing forced cross-origin redirection

URL Redirection to Untrusted Site 'Open Redirect' vulnerability in the HTML5 scrubber in rrrene htmlsanitizeex allows a remote attacker to force visitors of a page to navigate to a site of the attacker's choosing via a element in sanitized HTML. HtmlSanitizeEx.html5/1 keeps attacker-supplied...

EEF-CVE-2026-66829 html_sanitize_ex HTML5 scrubber keeps attacker-supplied meta refresh, allowing forced cross-origin redirection

Summary URL Redirection to Untrusted Site 'Open Redirect' vulnerability in the HTML5 scrubber in rrrene htmlsanitizeex allows a remote attacker to force visitors of a page to navigate to a site of the attacker's choosing via a element in sanitized HTML. HtmlSanitizeEx.html5/1 keeps...

EUVD-2026-54082

URL Redirection to Untrusted Site 'Open Redirect' vulnerability in the HTML5 scrubber in rrrene htmlsanitizeex allows a remote attacker to force visitors of a page to navigate to a site of the attacker's choosing via a element in sanitized HTML. HtmlSanitizeEx.html5/1 keeps attacker-supplied...

CVE-2026-66370 html_sanitize_ex HTML5 scrubber keeps attacker-supplied form-association attributes, allowing form hijacking

URL Redirection to Untrusted Site 'Open Redirect' vulnerability in the HTML5 scrubber in rrrene htmlsanitizeex allows an unauthenticated remote attacker to retarget a form already on the rendering page and receive whatever the victim submits, including credentials, via the form and formaction...

CVE-2026-66843

CVE-2026-66843 affects html_sanitize_ex HTML5 scrubber. The vulnerability arises because the object element (data attribute) is not registered in allow_tag_with_uri_attributes/3, and the only guard is a lowercase javascript: prefix. This allows attacker-supplied content to be embedded in a truste...

CVE-2026-66843

Inclusion of Functionality from Untrusted Control Sphere vulnerability in the HTML5 scrubber in rrrene htmlsanitizeex allows a remote attacker to load a document of their choosing into a trusted page via the data attribute of an element in sanitized HTML. object is the one URI-bearing element in...

EUVD-2026-54080

Inclusion of Functionality from Untrusted Control Sphere vulnerability in the HTML5 scrubber in rrrene htmlsanitizeex allows a remote attacker to load a document of their choosing into a trusted page via the data attribute of an element in sanitized HTML. object is the one URI-bearing element in...

EEF-CVE-2026-66843 html_sanitize_ex HTML5 scrubber keeps attacker-supplied `<object>` elements, allowing untrusted content embedding

Summary Inclusion of Functionality from Untrusted Control Sphere vulnerability in the HTML5 scrubber in rrrene htmlsanitizeex allows a remote attacker to load a document of their choosing into a trusted page via the data attribute of an element in sanitized HTML. object is the one URI-bearing...

CVE-2026-66370: URL Redirection to Untrusted Site

URL Redirection to Untrusted Site 'Open Redirect' vulnerability in the HTML5 scrubber in rrrene htmlsanitizeex allows an unauthenticated remote attacker to retarget a form already on the rendering page and receive whatever the victim submits, including credentials, via the form and formaction...

CVE-2026-66843: Inclusion of Functionality from Untrusted Control Sphere

Inclusion of Functionality from Untrusted Control Sphere vulnerability in the HTML5 scrubber in rrrene htmlsanitizeex allows a remote attacker to load a document of their choosing into a trusted page via the data attribute of an element in sanitized HTML. object is the one URI-bearing element in...

PT-2026-68623

Name of the Vulnerable Software and Affected Versions html sanitize ex versions 0.3.1 through 1.5.2 Description An Open Redirect issue exists in the HTML5 scrubber of the software. A remote attacker can force visitors to navigate to an untrusted site by inserting a element into sanitized HTML. Th...

PT-2026-68624

Name of the Vulnerable Software and Affected Versions html sanitize ex versions 0.3.1 through 1.5.2 Description An Inclusion of Functionality from Untrusted Control Sphere issue exists in the HTML5 scrubber. A remote attacker can load an arbitrary document into a trusted page by utilizing the dat...

CVE-2026-66829: URL Redirection to Untrusted Site

URL Redirection to Untrusted Site 'Open Redirect' vulnerability in the HTML5 scrubber in rrrene htmlsanitizeex allows a remote attacker to force visitors of a page to navigate to a site of the attacker's choosing via a element in sanitized HTML. HtmlSanitizeEx.html5/1 keeps attacker-supplied...