---
id: CVE-2026-86303
title: >-
  A vulnerability was determined in 92181 markdown up to
  058cab0cb7fb245a0ccc6b8446963ff8d573558f
summary: >-
  A vulnerability was determined in 92181 markdown up to
  058cab0cb7fb245a0ccc6b8446963ff8d573558f. Affected by this issue is the
  function lds of the file md.c. Executing a manipulation can lead to
  out-of-bounds read. The attack can be exec…
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-119
  - CWE-125
vendor: '92181'
product: markdown
affected:
  - markdown 058cab0cb7fb245a0ccc6b8446963ff8d573558f
published: '2026-09-07'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T13:17:28.893'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86303'
references:
  - url: 'https://github.com/92181/markdown/'
    label: cna@vuldb.com
  - url: >-
      https://github.com/92181/markdown/commit/c000d2f9cf390c315378d3717cf20911cf3e80a6
    label: cna@vuldb.com
  - url: 'https://github.com/92181/markdown/issues/1'
    label: cna@vuldb.com
  - url: 'https://github.com/92181/markdown/pull/2'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-86303'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/907499'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/399467'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/399467/cti'
    label: cna@vuldb.com
  - url: 'https://github.com/92181/markdown/issues/1'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-08T12:57:16.939381Z'
epss: 0.00314
epssPercentile: 0.24559
ingestedAt: '2026-09-08T15:33:26.977Z'
---

## Overview

A vulnerability was determined in 92181 markdown up to 058cab0cb7fb245a0ccc6b8446963ff8d573558f. Affected by this issue is the function lds of the file md.c. Executing a manipulation can lead to out-of-bounds read. The attack can be executed remotely. This product implements a rolling release for ongoing delivery, which means version information for affected or updated releases is unavailable. This patch is called c000d2f9cf390c315378d3717cf20911cf3e80a6. A patch should be applied to remediate this issue.

## Remediation

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