High severityNVD Advisory· Published Feb 22, 2023· Updated Mar 11, 2025
markdown-it-py crash on null assertions
CVE-2023-26303
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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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
markdown-it-pyPyPI | < 2.2.0 | 2.2.0 |
Affected products
3- ghsa-coords2 versions
< 2.2.0+ 1 more
- (no CPE)range: < 2.2.0
- (no CPE)range: < 2.2.0-1.1
- Executable Books/markdown-it-pyv5Range: 0
Patches
Vulnerability mechanics
References
6- github.com/executablebooks/markdown-it-py/commit/ae03c6107dfa18e648f6fdd1280f5b89092d5d49ghsapatchWEB
- github.com/advisories/GHSA-vrjv-mxr7-vjf8ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2023-26303ghsaADVISORY
- github.com/executablebooks/markdown-it-py/commit/53ca3e9c2b9e9b295f6abf7f4ad2730a9b70f68cghsaWEB
- github.com/executablebooks/markdown-it-py/pull/246ghsaWEB
- github.com/pypa/advisory-database/tree/main/vulns/markdown-it-py/PYSEC-2023-24.yamlghsaWEB
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