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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-47080 Detail

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.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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  EEF
CVSS-B 2.1 LOW
Vector:  CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://cna.erlef.org/cves/CVE-2026-47080.html EEF
https://github.com/joshnuss/xml_builder/commit/bfb1ada071ccc1e384c30f782197ca5154106706 EEF
https://github.com/joshnuss/xml_builder/security/advisories/GHSA-67r9-hmxw-h595 EEF
https://osv.dev/vulnerability/EEF-CVE-2026-47080 EEF

Weakness Enumeration

CWE-ID CWE Name Source
CWE-91 XML Injection (aka Blind XPath Injection) EEF  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-47080
NVD Published Date:
08/21/2026
NVD Last Modified:
08/21/2026
Source:
EEF