CVSS 4.0
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, само при определена конфигурация или състояние на системата, без вход и без действие от потребителя.
- Експлоатация: има публичен пример за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
Inappropriate Encoding for Output Context vulnerability in joshnuss xml_builder (XmlBuilder module) allows Content Spoofing, Cross-site Scripting. This vulnerability is associated with program files lib/xml_builder.ex and program routines XmlBuilder.generate/1, XmlBuilder.generate/2, XmlBuilder.escape_string/1, XmlBuilder.escape_entity/1. XmlBuilder.generate/1 does not escape literal & characters in text or attribute values when they are followed by an entity-like token (lt;, gt;, amp;, quot;, apos;). As a result, attacker-supplied input such as <script> is emitted verbatim into the serialized XML rather than being escaped to &lt;script&gt;. When a downstream XML parser later reads the document, it decodes the entity sequences into the literal characters <script>, promoting inert-looking text into real markup. This allows an attacker to bypass upstream filters that block raw < and > characters, injecting markup into any downstream consumer that parses the produced XML and renders the text content in a markup-sensitive context (HTML, SVG, RSS/Atom feeds). Both element text and attribute values are affected. This issue affects xml_builder: from 0.0.6 before 2.4.1.
Засегнати продукти
- joshnuss xml_builder: 0.0.6 преди 2.4.1
- joshnuss xml_builder: aae31e6e8ac837bcbb8afb816c0d14324b5cfe2b преди c3390e2046ec297b3bb8c30d5779cdfd6508c275
Вид слабост
История
- 21 август 2026 Публикувано
Други уязвимости в joshnuss xml_builder
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-47079
- https://nvd.nist.gov/vuln/detail/CVE-2026-47079
- https://github.com/joshnuss/xml_builder/security/advisories/GHSA-5hjx-8g53-cmvm
- https://cna.erlef.org/cves/CVE-2026-47079.html
- https://osv.dev/vulnerability/EEF-CVE-2026-47079
- https://github.com/joshnuss/xml_builder/commit/c3390e2046ec297b3bb8c30d5779cdfd6508c275