CVE-2026-59928
2 advisories.
PyPI/mistune CVE-2026-59928: high 7.5, EPSS 0.65%
Mistune block_parser: quadratic-time parsing on long lists of repeated reference-link definitions
Action: Upgrade mistune to 3.3.0 or later.
pip install mistune==3.3.0Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 3.3.0 | - |
Fixed versions
| 3.3.0 |
Sources
- osv: GHSA-ffq3-xpv3-j92q
- https://github.com/lepture/mistune/security/advisories/GHSA-ffq3-xpv3-j92q
- https://nvd.nist.gov/vuln/detail/CVE-2026-59928
- https://github.com/lepture/mistune/commit/2b04d7ba341c16ac78fe82d3076bdd5c3de87c69
- https://github.com/lepture/mistune
- https://github.com/lepture/mistune/releases/tag/v3.3.0
- https://github.com/pypa/advisory-database/tree/main/vulns/mistune/PYSEC-2026-2216.yaml
CVE-2026-59928 · published · modified · JSON
PyPI/mistune CVE-2026-59928: high 7.5, EPSS 0.65%
Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, a Markdown document containing many repeated or distinct reference-link definitions causes quadratic work in src/mistune
Action: Upgrade mistune to 3.3.0 or later.
pip install mistune==3.3.0Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 3.3.0 | - |
Fixed versions
| 3.3.0 |
Sources
- osv: PYSEC-2026-2216
- https://github.com/lepture/mistune/releases/tag/v3.3.0
- https://github.com/lepture/mistune/commit/2b04d7ba341c16ac78fe82d3076bdd5c3de87c69
- https://github.com/lepture/mistune/security/advisories/GHSA-ffq3-xpv3-j92q
CVE-2026-59928 · published · modified · JSON