{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-92106", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-09-21T12:15:01.326Z", "datePublished": "2026-09-25T09:33:13.051Z", "dateUpdated": "2026-09-25T12:41:30.597Z" }, "containers": { "cna": { "affected": [ { "collectionURL": "https://repo.hex.pm", "cpes": [ "cpe:2.3:a:dashbitco:lazy_html:*:*:*:*:*:*:*:*" ], "defaultStatus": "unaffected", "modules": [ "'Elixir.LazyHTML.Tree'", "'Elixir.LazyHTML'", "'Elixir.LazyHTML.NIF'" ], "packageName": "lazy_html", "packageURL": "pkg:hex/lazy_html", "product": "lazy_html", "programFiles": [ "lib/lazy_html/tree.ex", "lib/lazy_html.ex", "c_src/lazy_html.cpp" ], "programRoutines": [ { "name": "'Elixir.LazyHTML.Tree':to_html/2" }, { "name": "'Elixir.LazyHTML':to_html/2" }, { "name": "is_noescape_text_node" } ], "repo": "https://github.com/dashbitco/lazy_html", "vendor": "dashbitco", "versions": [ { "lessThan": "0.1.13", "status": "affected", "version": "0.1.0", "versionType": "semver" } ] }, { "collectionURL": "https://github.com", "cpes": [ "cpe:2.3:a:dashbitco:lazy_html:*:*:*:*:*:*:*:*" ], "defaultStatus": "unaffected", "modules": [ "'Elixir.LazyHTML.Tree'", "'Elixir.LazyHTML'", "'Elixir.LazyHTML.NIF'" ], "packageName": "dashbitco/lazy_html", "packageURL": "pkg:github/dashbitco/lazy_html", "product": "lazy_html", "programFiles": [ "lib/lazy_html/tree.ex", "lib/lazy_html.ex", "c_src/lazy_html.cpp" ], "programRoutines": [ { "name": "'Elixir.LazyHTML.Tree':to_html/2" }, { "name": "'Elixir.LazyHTML':to_html/2" }, { "name": "is_noescape_text_node" } ], "repo": "https://github.com/dashbitco/lazy_html", "vendor": "dashbitco", "versions": [ { "lessThan": "f32c7fd6223225b68bc8691c78b6d4a77972f1d5", "status": "affected", "version": "1dee15746c024916b3110af8b168c2f3b3065fbd", "versionType": "git" } ] } ], "cpeApplicability": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:a:dashbitco:lazy_html:*:*:*:*:*:*:*:*", "versionEndExcluding": "0.1.13", "versionStartIncluding": "0.1.0", "vulnerable": true } ], "negate": false, "operator": "OR" } ], "operator": "AND" } ], "credits": [ { "lang": "en", "type": "reporter", "value": "Peter Ullrich" }, { "lang": "en", "type": "remediation developer", "value": "Jonatan Kłosko" }, { "lang": "en", "type": "analyst", "value": "Jonatan Männchen / EEF" }, { "lang": "en", "type": "analyst", "value": "José Valim" } ], "dateAssigned": "2026-09-24T13:39:50.000Z", "descriptions": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in dashbitco lazy_html allows mutation XSS via a parse and serialize round-trip of attacker-supplied HTML.

\n

LazyHTML.to_html/2 and LazyHTML.Tree.to_html/2 decide whether to escape an element's text from its tag name alone. A style or script element inside SVG or MathML foreign content is parsed with character references decoded, but is serialized as an HTML raw-text element, so its text is emitted unescaped. Encoded markup such as &lt;/style&gt;&lt;img src=x onerror=...&gt; inside <svg><style> therefore closes the element on re-parse and becomes live markup. Applications that parse untrusted HTML with lazy_html, filter the document or tree, and serialize it for display are affected, since the payload is a plain text node that no element or attribute filter sees.

\n

This issue affects lazy_html: from 0.1.0 before 0.1.13.

" }, { "base64": false, "type": "text/markdown", "value": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in dashbitco lazy_html allows mutation XSS via a parse and serialize round-trip of attacker-supplied HTML.\n\n`LazyHTML.to_html/2` and `LazyHTML.Tree.to_html/2` decide whether to escape an element's text from its tag name alone. A `style` or `script` element inside SVG or MathML foreign content is parsed with character references decoded, but is serialized as an HTML raw-text element, so its text is emitted unescaped. Encoded markup such as `</style><img src=x onerror=...>` inside `

An attacker who can submit HTML to an application that sanitizes it with lazy_html can run script in the browsers of users who view the sanitized output.

" }, { "base64": false, "type": "text/markdown", "value": "An attacker who can submit HTML to an application that sanitizes it with lazy_html can run script in the browsers of users who view the sanitized output." } ], "value": "An attacker who can submit HTML to an application that sanitizes it with lazy_html can run script in the browsers of users who view the sanitized output." } ] } ], "metrics": [ { "cvssV4_0": { "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 2.3, "baseSeverity": "LOW", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED" }, "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ] } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-79", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-09-25T09:33:13.051Z" }, "references": [ { "name": "GitHub Advisory", "tags": [ "related", "vendor-advisory" ], "url": "https://github.com/dashbitco/lazy_html/security/advisories/GHSA-8rqp-v692-v82q" }, { "name": "EEF CNA record for CVE-2026-92106", "tags": [ "related" ], "url": "https://cna.erlef.org/cves/CVE-2026-92106.html" }, { "name": "OSV record EEF-CVE-2026-92106", "tags": [ "related" ], "url": "https://osv.dev/vulnerability/EEF-CVE-2026-92106" }, { "name": "Introducing commit 1dee157 in dashbitco/lazy_html", "tags": [ "related" ], "url": "https://github.com/dashbitco/lazy_html/commit/1dee15746c024916b3110af8b168c2f3b3065fbd" }, { "name": "Fix commit f32c7fd in dashbitco/lazy_html", "tags": [ "patch" ], "url": "https://github.com/dashbitco/lazy_html/commit/f32c7fd6223225b68bc8691c78b6d4a77972f1d5" } ], "source": { "discovery": "EXTERNAL" }, "title": "lazy_html serializes SVG and MathML style and script text unescaped, allowing mutation XSS" }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-09-25T12:35:42.717583Z", "id": "CVE-2026-92106", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-25T12:41:30.597Z" } } ] } }