---
id: CVE-2026-48590
title: >-
  XML Injection vulnerability in joshnuss xml_builder (XmlBuilder module) allows
  Content Spoofing, XML Injection.


  This vulnerability is associated with program files lib/xml_builder.ex and
  program routines XmlBuilder.generate/1, XmlBuilde…
summary: >-
  XML Injection vulnerability in joshnuss xml_builder (XmlBuilder module) allows
  Content Spoofing, XML Injection.


  This vulnerability is associated with program files lib/xml_builder.ex and
  program routines XmlBuilder.generate/1, XmlBuilde…
severity: none
cwe:
  - CWE-91
published: '2026-08-21'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T15:10:00.103'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-48590'
references:
  - url: 'https://cna.erlef.org/cves/CVE-2026-48590.html'
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: >-
      https://github.com/joshnuss/xml_builder/commit/d5c0aec32a8eecbb440fb9bbb0f59d4d188d5859
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: >-
      https://github.com/joshnuss/xml_builder/security/advisories/GHSA-r82p-3q2p-728w
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: 'https://osv.dev/vulnerability/EEF-CVE-2026-48590'
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: >-
      https://github.com/joshnuss/xml_builder/security/advisories/GHSA-r82p-3q2p-728w
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00226
epssPercentile: 0.13387
ingestedAt: '2026-10-27T18:52:09.903Z'
---

## Overview

XML Injection vulnerability in joshnuss xml_builder (XmlBuilder module) allows Content Spoofing, XML Injection.

This vulnerability is associated with program files lib/xml_builder.ex and program routines XmlBuilder.generate/1, XmlBuilder.generate/2, XmlBuilder.element/1, XmlBuilder.element/2, XmlBuilder.element/3.

Element names, attribute names, and doctype identifiers are interpolated verbatim into the serialized XML output without validation or escaping of structural characters (<, >, ", ', &). An attacker who can influence a name argument (for example, an element name derived from a JSON object key or an HTTP form field name) can inject arbitrary XML markup including extra elements, comments, and event-handler attributes into the output document.

This issue affects xml_builder: from 0.0.1 before 2.4.1.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.