markdown-it-py Denial of Service vulnerability in the command line interface
Published Feb 22, 2023 · Updated Oct 23, 2026 · Also known as GHSA-jrwr-5x3p-hvc3, PYSEC-2023-23
Original summary
Normalized public record · Updated Oct 23, 2026
markdown-it-py Denial of Service vulnerability in the command line interface
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
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.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- LOW
- Confidence
- Not available
- Aliases
- GHSA-jrwr-5x3p-hvc3, PYSEC-2023-23
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
Record history
Published Feb 22, 2023 · Last refreshed Oct 23, 2026