high7.5
CVE-2026-115349
Mistune from 3.0.0 before 3.3.0 contains an algorithmic complexity denial of service vulnerability in the parse_link_text function in src/mistune/helpers.py.
Impact
Mistune from 3.0.0 before 3.3.0 contains an algorithmic complexity denial of service vulnerability in the parse_link_text function in src/mistune/helpers.py. Attackers can submit markdown with deeply nested square brackets triggering quadratic parsing time, exhausting server CPU with small crafted requests.
Affected products
| Product | Affected versions |
|---|---|
| Mistune From 3.0.0 | before 3.3.0 |
Versions were read from the advisory text. No structured product data has been published for this record yet.