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.
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | markdown-it-py | < 2.2.0 | 2.2.0 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2023-26302
- https://github.com/executablebooks/markdown-it-py/pull/247
- https://github.com/executablebooks/markdown-it-py/commit/53ca3e9c2b9e9b295f6abf7f4ad2730a9b70f68c
- https://github.com/executablebooks/markdown-it-py
- https://github.com/executablebooks/markdown-it-py/releases/tag/v2.2.0
- https://github.com/pypa/advisory-database/tree/main/vulns/markdown-it-py/PYSEC-2023-23.yaml
- https://github.com/advisories/GHSA-jrwr-5x3p-hvc3
- CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H- Weakness (CWE)
CWE-173- Platform
- Python (PyPI)
- Package
markdown-it-py- Disclosed
- 22.02.2023
- Updated
- 11.10.2026 12:20
Sources and licenses
OSV / GitHub Advisory Database - GHSA-jrwr-5x3p-hvc3 - CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2023-23 - PyPA Advisory Database; CC BY 4.0
Vulnerability history: markdown-it-py
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 02.2023 02.2023
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 2
Disclosures per year
- 2023: 2
- 2024: 0
- 2025: 0
- 2026: 0
-
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. this entry
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