# CVE-2026-41675: xmldom: XML node injection through unvalidated processing instruction serialization

CVE-2026-41675 is fixed in node-xmldom on 1 platform by DEBIAN-CVE-2026-41675 (version 0.9.10-1), released May 7, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-41675
- Priority: High
- CVSS: n/a (Important)
- EPSS: 0.0047
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 7, 2026
- Weakness: XML Injection (aka Blind XPath Injection)
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41675

## Description

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 processing instruction data to be serialized into XML without validating or neutralizing the PI-closing sequence ?>. As a result, an attacker can terminate the processing instruction 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | node-xmldom Debian 14 | 0.9.10-1 | [DEBIAN-CVE-2026-41675](https://patchblox.com/security/data/fix/linux/debian-cve-2026-41675.md) | May 7, 2026 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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