Python-Markdown has 2 CVEs on record. 1 was published in the last 90 days. The median CVSS is 7.5 (high).
CVEs per month
Last 12 months, by publish date
1225/120126/010226/020326/030426/040526/050626/060726/070826/080926/091026/101126/11
- Exploited share
- 0% vs 1% corpus
- Median CVSS
- 7.5
- Publish → KEV
- —
- Last 90 days
- 1 prev 0
2
Total CVEs
0
Critical
0
CISA KEV
0
Exploited
Worst active — by depth score
CVE-2019-25781High· 7.5Python-Markdown 3.0 through 3.11.2 Denial of Service via Link Bracket Parsing41CVE-2025-69534High· 7.5Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing41
Python-Markdown vulnerabilities
CVEs affecting Python-Markdown, newest first. Open any entry for full detail, references, and exploit status.
2 CVEsRSS
CVE-2019-25781High· 7.5Python-Markdown 3.0 through 3.11.2 Denial of Service via Link Bracket Parsing
Python-Markdown 3.0 through 3.11.2 contains an algorithmic complexity vulnerability in inline link parsing that allows remote attackers to exhaust CPU through unmatched brackets. Attackers can submit short Markdown containing repeated [ …
▾ TwilightPython-Markdown · MarkdownEPSS 0.42%via CVEORG
CVE-2025-69534High· 7.5Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing
Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception,…
▾ Twilightpython-markdown · markdownEPSS 0.60%via NVD