GHSA-6MJ3-QW4J-HGRW xmldom: HTML raw-text closing-tag case mismatch causes output amplification

Summary In HTML mode text/html, a raw-text element script, style, textarea, title whose closing tag differs in case from its opening tag e.g. for is mishandled by the parser, producing quadratic On² output growth — a small crafted document parses and serializes into output orders of magnitude...

DEBIAN-CVE-2026-83612

xmldom is a pure JavaScript W3C standard-based XML DOM Level 2 Core DOMParser and XMLSerializer module. From 0.9.0-beta.1 until 0.9.12, HTML-mode parsing through DOMParser.parseFromString mishandles a mixed-case closing tag for the script, style, textarea, or title raw-text elements...

CVE-2026-83612 xmldom: HTML raw-text closing-tag case mismatch causes output amplification

xmldom is a pure JavaScript W3C standard-based XML DOM Level 2 Core DOMParser and XMLSerializer module. From 0.9.0-beta.1 until 0.9.12, HTML-mode parsing through DOMParser.parseFromString mishandles a mixed-case closing tag for the script, style, textarea, or title raw-text elements...