---
id: CVE-2026-92106
title: >-
  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.


  LazyHTML.to_html/2 and LazyHTM…
summary: >-
  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.


  LazyHTML.to_html/2 and LazyHTM…
severity: low
cvss: 2.3
cvssVector: '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'
cwe:
  - CWE-79
vendor: dashbitco
product: lazy_html
affected:
  - lazy_html >= 0.1.0 < 0.1.13
  - >-
    dashbitco/lazy_html >= 1dee15746c024916b3110af8b168c2f3b3065fbd <
    f32c7fd6223225b68bc8691c78b6d4a77972f1d5
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T13:22:04.673'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92106'
references:
  - url: 'https://cna.erlef.org/cves/CVE-2026-92106.html'
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: >-
      https://github.com/dashbitco/lazy_html/commit/1dee15746c024916b3110af8b168c2f3b3065fbd
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: >-
      https://github.com/dashbitco/lazy_html/commit/f32c7fd6223225b68bc8691c78b6d4a77972f1d5
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: >-
      https://github.com/dashbitco/lazy_html/security/advisories/GHSA-8rqp-v692-v82q
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: 'https://osv.dev/vulnerability/EEF-CVE-2026-92106'
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-25T12:35:42.717583Z'
cvssSource: cna
ingestedAt: '2026-09-25T10:05:58.610Z'
epss: 0.00538
epssPercentile: 0.42926
---

## Overview

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.

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.

This issue affects lazy_html: from 0.1.0 before 0.1.13.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.