SEPTEMBER 18, 2026
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Case File

CVE-2026-83616

HIGH · CVSS 8.7 EPSS 0.35% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-01 · Last synced 2026-09-18

CyberRota Analysis

AI-Generated

The xmldom module in JavaScript is vulnerable due to improper validation of the target parameter in the Document.createProcessingInstruction function, allowing attackers to inject malicious XML structures. This can lead to XML injection attacks, potentially compromising the integrity of XML data processing. Organizations using affected versions of xmldom or @xmldom/xmldom should prioritize upgrading to the patched versions to mitigate this high-severity risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-83616
Severity
HIGH
CVSS
8.7
EPSS
0.35%
Java

Original NVD Description

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. Prior to @xmldom/xmldom versions 0.8.15 and 0.9.12, and in xmldom version 0.6.0 and earlier, Document.createProcessingInstruction(target, data) in lib/dom.js accepts an unvalidated target, while the requireWellFormed: true serializer checks only for a colon and the reserved case-insensitive xml name on 0.9.x and performs no target check on 0.8.x. Because serialization emits <?target data?>, a target containing >, ?, whitespace, or another invalid XML-name character can break the processing-instruction boundary and inject XML structure. This issue is fixed in @xmldom/xmldom versions 0.8.15 and 0.9.12; no fixed version is available for xmldom.