Improper Encoding or Escaping of Output

Overview xhtml-purifier is a Simple HTML purifier/cleaner for untrusted HTML. Affected versions of this package are vulnerable to Improper Encoding or Escaping of Output via the attributeString function in XHTMLPurifier.js, which writes attribute values into double-quoted HTML attributes without...

GHSA-J8R4-32C5-33RC xhtml-purifier has HTML attribute-injection (sanitizer bypass) that leads to XSS

xhtml-purifier does not HTML-entity-encode attribute values when serializing its sanitized output. In attributeString XHTMLPurifier.js, around line 148 the attribute value is concatenated directly into a double-quoted attribute without encoding. As a result, an attacker-controlled value in any...

xhtml-purifier has HTML attribute-injection (sanitizer bypass) that leads to XSS

xhtml-purifier does not HTML-entity-encode attribute values when serializing its sanitized output. In attributeString XHTMLPurifier.js, around line 148 the attribute value is concatenated directly into a double-quoted attribute without encoding. As a result, an attacker-controlled value in any...

CVE-2026-61784

xhtml-purifier is a Node.js library to take in raw/unknown/untrusted HTML and output cleaned, purified, trusted HTML. Versions prior to 0.4.3 do not HTML-entity-encode attribute values when serializing its sanitized output. In attributeString XHTMLPurifier.js, around line 148 the attribute value ...

CVE-2026-61784

xhtml-purifier is a Node.js library to take in raw/unknown/untrusted HTML and output cleaned, purified, trusted HTML. Versions prior to 0.4.3 do not HTML-entity-encode attribute values when serializing its sanitized output. In attributeString XHTMLPurifier.js, around line 148 the attribute value ...

CVE-2026-61784

The xhtml-purifier Node.js library (versions prior to 0.4.3 ) contains an HTML attribute-injection vulnerability in the attributeString() function of XHTMLPurifier.js. The root cause is a failure to HTML-entity-encode attribute values during serialization, allowing an attacker to use a double-quo...

EUVD-2026-86325

xhtml-purifier is a Node.js library to take in raw/unknown/untrusted HTML and output cleaned, purified, trusted HTML. Versions prior to 0.4.3 do not HTML-entity-encode attribute values when serializing its sanitized output. In attributeString XHTMLPurifier.js, around line 148 the attribute value ...

CVE-2026-61784 xhtml-purifier has HTML attribute-injection (sanitizer bypass) that leads to XSS

xhtml-purifier is a Node.js library to take in raw/unknown/untrusted HTML and output cleaned, purified, trusted HTML. Versions prior to 0.4.3 do not HTML-entity-encode attribute values when serializing its sanitized output. In attributeString XHTMLPurifier.js, around line 148 the attribute value ...

PT-2026-98196

Name of the Vulnerable Software and Affected Versions xhtml-purifier versions prior to 0.4.3 Description The library fails to HTML-entity-encode attribute values during the serialization of sanitized output. In the attributeString function, attribute values are concatenated directly into...