What is CVE-2023-26302?

CVE-2023-26302 is a low-severity vulnerability in Executable Books Markdown-It-Py, classified under CWE-173. CVSS score: 3.3/10. Published 2023-02-22.

How severe is CVE-2023-26302?

Low severity. CVSS v3 base score is 3.3 out of 10.

Vulnerability in Executable Books Markdown-It-Py

CVE-2023-26302

Denial of service could be caused to the command line interface of markdown-it-py, before v2.2.0, if an attacker was allowed to use invalid UTF-8 characters as input.

Published 2023-02-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.002 (13.4th percentile), scored 2026-11-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Executable Books Markdown-It-Py — versions 0
Executablebooks Markdown-It-Py

Weakness classification (CWE)

CWE-173

References

github.com/executablebooks/markdown-it-py/commit/53ca3e9c2b9e9b295f6abf7f4ad273… (Patch, patch)

Frequently asked questions

What is CVE-2023-26302?: CVE-2023-26302 is a low-severity vulnerability in Executable Books Markdown-It-Py, classified under CWE-173. CVSS score: 3.3/10. Published 2023-02-22.
How severe is CVE-2023-26302?: Low severity. CVSS v3 base score is 3.3 out of 10.