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@xmldom/xmldom CVE-2026-83616

| EUVDEUVD-2026-69239 HIGH
XML Injection (aka Blind XPath Injection) (CWE-91)
2026-09-01 GitHub_M GHSA-c7q8-3ch8-vqpv
8.7
CVSS 4.0 · Vendor: GitHub_M
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Severity by source

Vendor (GitHub_M) PRIMARY
8.7 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
8.6 HIGH

Network-exploitable with no privileges when PI target is attacker-controlled; scope changes because injected XML can be processed by downstream systems outside the vulnerable application.

3.1 AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N
SUSE
7.1 HIGH
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Red Hat
7.5 HIGH
qualitative

Primary rating from Vendor (GitHub_M).

CVSS VectorVendor: GitHub_M

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

6
POC Analysis Generated
Sep 10, 2026 - 11:27 vuln.today
Patch available
Sep 01, 2026 - 16:02 EUVD
Metadata Corrected
Sep 01, 2026 - 15:40 vuln.today
tag: Information Disclosure removed
Source Code Evidence Fetched
Sep 01, 2026 - 15:25 vuln.today
Analysis Generated
Sep 01, 2026 - 15:25 vuln.today
CVE Published
Sep 01, 2026 - 14:45 cve.org
HIGH 8.7

Blast Radius

ecosystem impact
† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth
  • 16 npm packages depend on @xmldom/xmldom (9 direct, 7 indirect)
  • 1,999 npm packages depend on xmldom (859 direct, 1,166 indirect)

Ecosystem-wide dependent count for version 0.7.0 and other introduced versions.

DescriptionCVE.org

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.

AnalysisAI

Processing-instruction target injection in the @xmldom/xmldom JavaScript library allows XML structure breakout through unvalidated characters in Document.createProcessingInstruction() targets. Versions prior to 0.8.15 and 0.9.12 - and all versions of the legacy xmldom package (0.6.0 and earlier, which has no fix) - emit malformed processing instructions when a target contains >, ?, whitespace, or other XML-Name-invalid characters, enabling injection of arbitrary XML structure into the serialized output. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Persist
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Vulnerability AssessmentAI

Exploitation Exploitation requires that the target argument to Document.createProcessingInstruction() originate from or be influenced by attacker-controlled input, and that the resulting DOM be subsequently serialized via XMLSerializer.serializeToString(). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The source-provided CVSS 4.0 score of 8.7 (High) with AV:N/AC:L/AT:N/PR:N/UI:N reflects a worst-case scenario where an application passes untrusted user input directly to createProcessingInstruction(). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade @xmldom/xmldom to version 0.8.15 (https://github.com/xmldom/xmldom/releases/tag/0.8.15) or 0.9.12 (https://github.com/xmldom/xmldom/releases/tag/0.9.12) depending on the branch in use; both releases are confirmed by GitHub release tags and the associated PR commits (https://github.com/xmldom/xmldom/commit/1cde3e31a07c41c87cfd368d6946aa477f16b4f9 and https://github.com/xmldom/xmldom/commit/3b694872bcb5c7e3cbadba961a4be2488750ce5b). … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, identify all applications and dependencies using @xmldom/xmldom (versions before 0.8.15 or 0.9.12) or legacy xmldom (0.6.0 and earlier). …

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Vendor StatusVendor

SUSE

Severity: Important
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Not-Affected
SUSE Linux Enterprise Module for Python 3 15 SP7 Not-Affected
SUSE Linux Enterprise Server 15 SP7 Not-Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP7 Not-Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS Affected

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CVE-2026-83616 vulnerability details – vuln.today

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