Answer in brief
CVE-2026-48590 records a Low severity (CVSS 2.1) vulnerability in Element and Attribute Names Injected Verbatim into XML Output in xml_builder. The current sources do not mark it as known exploited. The current feed maps joshnuss/joshnuss/xml_builder (generic), joshnuss/xml_builder (generic), joshnuss/xml_builder (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 2.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps joshnuss/joshnuss/xml_builder (generic), joshnuss/xml_builder (generic), joshnuss/xml_builder (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| joshnuss/joshnuss/xml_buildergeneric | >=9fb49131ad3ee146a4c9db9bc175bdffe32e30a0 <d5c0aec32a8eecbb440fb9bbb0f59d4d188d5859 | d5c0aec32a8eecbb440fb9bbb0f59d4d188d5859 |
| joshnuss/xml_buildergeneric | >=9fb49131ad3ee146a4c9db9bc175bdffe32e30a0 <d5c0aec32a8eecbb440fb9bbb0f59d4d188d5859 | d5c0aec32a8eecbb440fb9bbb0f59d4d188d5859 |
| joshnuss/xml_buildergeneric | >=0.0.1 <2.4.1 | 2.4.1 |
Published upstream
Aug 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 21, 2026
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.
Quoted source text, attributed separately from HOL analysis.