CVE catalog

CVE-2026-111759

markdown-it is a Markdown parser. Prior to 14.3.2 and 15.0.2, when typographer: true is enabled, specially crafted Markdown can cause quadratic processing time in the smartquotes rule, potentially lea

[CVE catalog]

Severity
High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
Updated
Source
[NVD] · [CVE record]
EPSS
0.59% · Oct 25, 2026

markdown-it is a Markdown parser. Prior to 14.3.2 and 15.0.2, when typographer: true is enabled, specially crafted Markdown can cause quadratic processing time in the smartquotes rule, potentially leading to denial of service in applications processing untrusted input. Many opening double quotes followed by unmatched closing single quotes cause repeated scans of the entire opener stack. The same issue occurs with the quote types reversed. The default configuration (typographer: false) is not affected, but this option is enabled with high probability. This issue is fixed in versions 14.3.2 and 15.0.2.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debiannode-markdown-itsid22.2.3+dfsg+~12.2.3-5vulnerable
Debiannode-markdown-itforky22.2.3+dfsg+~12.2.3-5vulnerable
Debiannode-markdown-ittrixie22.2.3+dfsg+~12.2.3-2vulnerable
Debiannode-markdown-itbookworm22.2.3+dfsg+~12.2.3-2vulnerable
Npmmarkdown-itNot reported14.3.2fixed
Ubuntunode-markdown-it22.0410.0.0+dfsg-2vulnerable
Ubuntunode-markdown-it22.0410.0.0+dfsg-3vulnerable
Ubuntunode-markdown-it22.0410.0.0+dfsg-3.1vulnerable
Ubuntunode-markdown-it22.0410.0.0+dfsg-4vulnerable
Ubuntunode-markdown-it22.0410.0.0+dfsg-5vulnerable
Ubuntunode-markdown-it22.0410.0.0+dfsg-6vulnerable
Ubuntunode-markdown-it24.0422.2.3+dfsg+~12.2.3-2vulnerable
Ubuntunode-markdown-it26.1022.2.3+dfsg+~12.2.3-4vulnerable
Ubuntunode-markdown-it26.1022.2.3+dfsg+~12.2.3-5vulnerable
Ubuntunode-markdown-it26.0422.2.3+dfsg+~12.2.3-2vulnerable
Ubuntunode-markdown-it26.0422.2.3+dfsg+~12.2.3-4vulnerable

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debiannode-markdown-itsourcesid(unfixed)not yet assignedNot reported[1151362]
Debiannode-markdown-itsourceforky(unfixed)not yet assignedNot reported[1151362]
Debiannode-markdown-itsourcetrixie(unfixed)not yet assignedNot reported[1151362]
Debiannode-markdown-itsourcebookworm(unfixed)not yet assignedNot reported[1151362]
Npmmarkdown-itnpmNot reported14.3.2Not reportedGHSA-R7FV-28H4-CVQ7Not reported

[Debian bug #1151362]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

  • [node-markdown-it]Affected
    Details (2)

    • 22.2.3+dfsg+~12.2.3-2 · all · bookworm

      Affected

      nvd · node-markdown-it · debian · bookworm; nvd · node-markdown-it · debian · 12

    • 22.2.3+dfsg+~12.2.3-2 · all · bookworm

      Affected

      nvd · node-markdown-it · debian · bookworm; nvd · node-markdown-it · debian · 12

[Debian 13 (Trixie)]

  • [node-markdown-it]Affected
    Details (2)

    • 22.2.3+dfsg+~12.2.3-2 · all · trixie

      Affected

      nvd · node-markdown-it · debian · 13

    • 22.2.3+dfsg+~12.2.3-2 · all · trixie

      Affected

      nvd · node-markdown-it · debian · 13

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]