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CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-44708MEDIUM
lepture mistune — Mistune Math Plugin XSS Escape Bypass
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   R  C  L  L  N    6.1   .0023   13.8     —
AFFECTED
  Product  Versions   Fixed
  mistune  < 3.2.1 –  —
TIMELINE
  May 7   Reserved by GitHub_M
  May 26  EXPLOIT PUBLISHED — CVE-2026-44708 (lepture mistune). Public exploit reference added.
  May 26  Published (CNA: GitHub_M)
CWE-79 · CNA: GitHub_M · CVSS v3.1 · 2 references · NVD status: Analyzed

Description

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, the mistune math plugin renders inline math ($...$) and block math ($$...$$) by concatenating the raw user-supplied content directly into the HTML output without any HTML escaping. This occurs even when the parser is explicitly created with escape=True, which is supposed to guarantee that all user-controlled text is sanitised before reaching the DOM. This vulnerability is fixed in 3.2.1.

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
May 7, 2026ReservedReserved by GitHub_M
May 26, 2026EXPLOIT PUBLISHEDEXPLOIT PUBLISHED — CVE-2026-44708 (lepture mistune). Public exploit reference added.
May 26, 2026PublishedPublished (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
VendorProduct / PackageEcosystemVersion introducedFixed
lepturemistune< 3.2.1

Weaknesses

CWE-79

References (2)

Related

Authoritative record: CVE-2026-44708 at cve.org

Vendors: lepture

Weaknesses: CWE-79

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-44708 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.