markdown-it-py Denial of Service vulnerability

MITTEL 5.5CVE-2023-26303 · GHSA-vrjv-mxr7-vjf8 · PYSEC-2023-24 · Published 23/02/2023 · updated 17/06/2026

Kurz gesagt

CVE-2023-26303 ist eine Schwachstelle (MITTEL (CVSS 5.5)) in markdown-it-py, markdown-it-py (executablebooks).
Wahrscheinlichkeit einer Ausnutzung in den nächsten 30 Tagen (EPSS): 0.22%, höher als bei 13.3% aller Schwachstellen.
Abhilfe: auf 2.2.0 oder neuer aktualisieren.

Package	Affected versions	Patched versions
markdown-it-py PyPI	`< 2.2.0`	`2.2.0`
markdown-it-py executablebooks	`< 2.2.0`	`2.2.0`

Denial of service could be caused to markdown-it-py, before v2.2.0, if an attacker was allowed to force null assertions with specially crafted input.

NVD description

Denial of service could be caused to markdown-it-py, before v2.2.0, if an attacker was allowed to force null assertions with specially crafted input.

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