Answer in brief
CVE-2026-47080 records a Low severity (CVSS 2.1) vulnerability in CDATA Section Breakout via Unsanitised ]]> 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 | >=26766f884ed19adee1563522c7afb5f056a6f3b5 <bfb1ada071ccc1e384c30f782197ca5154106706 | bfb1ada071ccc1e384c30f782197ca5154106706 |
| joshnuss/xml_buildergeneric | >=26766f884ed19adee1563522c7afb5f056a6f3b5 <bfb1ada071ccc1e384c30f782197ca5154106706 | bfb1ada071ccc1e384c30f782197ca5154106706 |
| joshnuss/xml_buildergeneric | >=0.0.7 <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.escape/1. The escape/1 clause for {:cdata, data} in lib/xml_builder.ex concatenates data verbatim between the CDATA opener <![CDATA[ and closer ]]> without rewriting or splitting on the embedded ]]> sequence. Because CDATA sections have no internal escape mechanism, the only safe way to embed arbitrary bytes is to split on ]]> and emit adjacent CDATA sections. An attacker who can supply input containing ]]> closes the CDATA section early; any bytes that follow are parsed as ordinary XML markup by downstream consumers, allowing injection of arbitrary elements, text, or entity references into the output document. This issue affects xml_builder: from 0.0.7 before 2.4.1.
Quoted source text, attributed separately from HOL analysis.