xmldom: XML node injection through unvalidated comment serialization
xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) `DOMParser` and `XMLSerializer` module. In @xmldom/xmldom prior to versions 0.9.10 and 0.8.13 and xmldom version 0.6.0 and prior, the package allows attacker-controlled comment content to be serialized into XML without validating or neutralizing comment-breaking sequences. As a result, an attacker can terminate the comment early and inject arbitrary XML nodes into the serialized output. This issue has been patched in versions @xmldom/xmldom versions 0.9.10 and 0.8.13.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for help- Published
- May 7, 2026
- Updated
- Aug 28, 2026
- EPSS
- 0.7% · 49th percentile
- CWE
- CWE-91
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Report tools
Action score
34
Monitor
Low priority for now.
- CVSS
- 34 / 40 · 8.7 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.7%
CISA SSVC decision
- Exploitation
- proof of concept
- Automatable
- yes
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · GitHub_M
- 8.7
- NVD has not scored this yet; the score shown is the CNA’s.
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
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| rhdh | 1.9 | cpe:2.3:redhat:rhdh:1.9 |
| openshift ai | 3.4 | cpe:2.3:redhat:openshift_ai:3.4 |
| podman desktop | 1 | cpe:2.3:redhat:podman_desktop:1 |
| enterprise linux | 8 | cpe:2.3:redhat:enterprise_linux:8 |
| jboss fuse | 7 | cpe:2.3:redhat:jboss_fuse:7 |
| openshift ai | cpe:2.3:redhat:openshift_ai:undefined | |
| openshift | 4 | cpe:2.3:redhat:openshift:4 |
| ansible portal | 2 | cpe:2.3:redhat:ansible_portal:2 |
Versions reported by the vendor
Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.
xmldom xmldom
- xmldom <= 0.6.0, @xmldom/xmldom >= 0.9.0, < 0.9.10, @xmldom/xmldom < 0.8.13affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | node-xmldom | all versions | — |
| Debian:14 | node-xmldom | before 0.9.10-1 | 0.9.10-1 |
| npm | @xmldom/xmldom | from 0.9.0 · before 0.9.10 | 0.9.10 |
| npm | @xmldom/xmldom | before 0.8.13 | 0.8.13 |
| npm | xmldom | up to and including 0.6.0 | — |
Same product
xmldom: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-83619xmldom: End-tag Whitespace-Trim Regex ReDoS — quadratic backtracking in the 0.8.x end-tag parser34Monitor
- CVE-2026-83618xmldom: requireWellFormed DocType publicId/systemId validation is bypassable via an embedded line terminator34Monitor
- CVE-2026-83617xmldom: requireWellFormed element/attribute name validation is bypassable via an embedded line terminator34Monitor
- CVE-2026-83616xmldom: Processing Instruction Target Injection Bypasses requireWellFormed34Monitor
- CVE-2026-83615xmldom: Quadratic-memory consumption34Monitor
- CVE-2026-83614xmldom: Quadratic-time parsing via the malformed-input recovery path — `parseElementStartPart` re-scan and `normalize()` adjacent-text merge34Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:node-xmldom | 0.9.10-1 · Debian:14 | Package registry (OSV) |
| npm:@xmldom/xmldom | 0.8.13 | Package registry (OSV) |
| npm:@xmldom/xmldom | 0.9.10 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2026-416740 days apartxmldom: XML injection through unvalidated DocumentType serialization34Monitor
- CVE-2026-416750 days apartxmldom: XML node injection through unvalidated processing instruction serialization34Monitor
- CVE-2026-83605117 days apartxmldom: Attribute name injection via setAttribute() bypasses requireWellFormed34Monitor
- CVE-2026-83607117 days apartxmldom: Element name injection via createElement() bypasses requireWellFormed34Monitor
- CVE-2026-83608117 days apartxmldom: DocType `name` Injection Bypasses requireWellFormed34Monitor
- CVE-2026-83616117 days apartxmldom: Processing Instruction Target Injection Bypasses requireWellFormed34Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- Integrity
- Availability
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- X
Weakness class (CWE)
CWE-91 · XML Injection (aka Blind XPath Injection)CVSS vector
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
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- access.redhat.com/errata/RHSA-2026:60520
- access.redhat.com/security/cve/CVE-2026-41672
- bugzilla.redhat.com/show_bug.cgi?id=2467631
- github.com/xmldom/xmldom/commit/b397540889086da868c30c366ad5c220d1a750c7
- github.com/xmldom/xmldom/commit/fda7cc313de30243fea35cada64e0bb12099c2a1
- github.com/xmldom/xmldom/pull/987
- github.com/xmldom/xmldom/releases/tag/0.8.13
- github.com/xmldom/xmldom/releases/tag/0.9.10
- github.com/xmldom/xmldom/security/advisories/GHSA-j759-j44w-7fr8
- access.redhat.com/errata/RHSA-2026:26234
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41672.json
Vendor advisories and official records. Exploit/PoC links are deliberately left out.