Skip to main content
CVE-2026-44708VulnerabilityPublished Updated

Prior to 3.2.1, the mistune math plugin renders inline math ($...$) and block math ($$...$$) by concatenating the raw

Affects mistuneSource GCVE Database

0
Compare
Authoritative record:CVE-2026-44708· Medium 6.1

Not known to be exploited · CVSS 6.1 Medium · fixed in 3.2.1 : update mistune when convenient.

Data as of 9 Nov 2026, 14:18 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 3.2.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10mistunepkg:deb/ubuntu/mistune?arch=source&distro=stonkingOther threatsAffected
  • =3.1.4-1
Fixed in–
Ubuntu 26.10mistune0pkg:deb/ubuntu/mistune0?arch=source&distro=stonkingOther threatsAffected
  • =0.8.4-6
Fixed in–
Ubuntu 26.04 LTSmistunepkg:deb/ubuntu/mistune?arch=source&distro=resoluteOther threatsAffected
  • =3.1.3-1
  • =3.1.4-1
Fixed in–
Ubuntu 25.10mistunepkg:deb/ubuntu/mistune?arch=source&distro=questingOther threatsAffected
  • =3.0.2-2
  • =3.1.3-1
Fixed in–
Ubuntu 25.10mistune0pkg:deb/ubuntu/mistune0?arch=source&distro=questingOther threatsAffected
  • =0.8.4-4
Fixed in–
Ubuntu 24.04 LTSmistunepkg:deb/ubuntu/mistune?arch=source&distro=nobleOther threatsAffected
  • =2.0.4-2
  • =3.0.2-1
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade mistune to version 3.2.1 or later, where this vulnerability is fixed. Versions prior to 3.2.1 are affected. No other mitigation is indicated or required as the fix addresses the root cause by properly escaping user input in the math plugin.

Description

Mistune is a Python Markdown parser whose math plugin, prior to version 3.2.1, improperly renders inline and block math expressions by directly concatenating raw user input into HTML output without escaping. This occurs even when escape mode is enabled, potentially allowing injection of malicious HTML or scripts. The vulnerability is fixed in version 3.2.1.

References

Community reviews

Loading reviews…