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xmldom EUVDEUVD-2026-69241

| CVE-2026-83617 HIGH
XML Injection (aka Blind XPath Injection) (CWE-91)
2026-09-01 GitHub_M GHSA-jxjr-3g7g-3944
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
7.5 HIGH

Network-reachable with no authentication at the library level; integrity-only impact as the bypass injects markup into serialized output with no confidentiality or availability consequence.

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

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: Authentication Bypass removed
Source Code Evidence Fetched
Sep 01, 2026 - 15:23 vuln.today
Analysis Generated
Sep 01, 2026 - 15:23 vuln.today
CVE Published
Sep 01, 2026 - 14:47 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 (7 direct, 9 indirect)

Ecosystem-wide dependent count for version 0.9.11.

DescriptionCVE.org

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. From 0.9.11 until 0.9.12, the requireWellFormed: true element and attribute name checks use the anchored QName_exact expression produced by reg() in lib/grammar.js, which inherits the multiline flag. A name with a valid first line followed by U+000A, U+000D, U+2028, or U+2029 and breakout markup therefore passes validation and is emitted verbatim in element start and end tags or attribute names. This bypasses the strict-serialization checks introduced for the earlier element-name and attribute-name injection advisories, while the default serialization path remains outside the strict guarantee. This issue is fixed in @xmldom/xmldom version 0.9.12.

AnalysisAI

XML injection in @xmldom/xmldom 0.9.11 allows attackers who supply crafted element or attribute names containing ECMAScript line terminators (U+000A, U+000D, U+2028, U+2029) to bypass the requireWellFormed: true serialization guard and emit arbitrary markup verbatim into serialized XML output. The bypass exploits the multiline flag inherited by the QName_exact regex in lib/grammar.js, which causes the anchors to match at line boundaries rather than string boundaries - directly circumventing the strict-name validation introduced to close earlier injection advisories. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Vulnerability AssessmentAI

Exploitation Exploitation requires two specific conditions to be simultaneously true: (1) the application must invoke XMLSerializer.serializeToString() with the explicit option { requireWellFormed: true } - this is a non-default setting that developers opt into specifically to enforce strict XML name validation; and (2) the attacker must control an element name, attribute name, or the node passed to serialization - for example, via a user-supplied XML document parsed by DOMParser that is later re-serialized, or via an API that allows clients to set node names. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 8.7 (AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H) reflects network-reachable, unauthenticated, high-integrity-impact exploitation, which is accurate for the worst-case deployment. … 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 0.9.12, which is the vendor-released patch confirmed by the GitHub release tag at https://github.com/xmldom/xmldom/releases/tag/0.9.12 and commit 7b2ec67e1750daadd0bb06c92e875e726544a362 (PR #1071). … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, conduct a complete inventory of systems and applications using @xmldom/xmldom version 0.9.11 and document exposure to untrusted XML input. …

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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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EUVD-2026-69241 vulnerability details – vuln.today

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