Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| joshnuss | xml_builder | 0.0.1 – < 2.4.1 | 2.4.1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Hex | xml_builder | >= 0.0.1, < 2.4.1 | 2.4.1 | EEF-CVE-2026-48590 |
References
- https://github.com/joshnuss/xml_builder/security/advisories/GHSA-r82p-3q2p-728w vendor-advisory related
- https://cna.erlef.org/cves/CVE-2026-48590.html related
- https://osv.dev/vulnerability/EEF-CVE-2026-48590 related
- https://github.com/joshnuss/xml_builder/commit/d5c0aec32a8eecbb440fb9bbb0f59d4d188d5859 patch