CVE-2026-59923
2 advisories.
PyPI/mistune CVE-2026-59923: medium 6.1, EPSS 0.35%
Mistune: XSS via percent-encoded javascript URI bypass in safe_url()
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-8c25-4j27-2rv3
- https://github.com/lepture/mistune/security/advisories/GHSA-8c25-4j27-2rv3
- https://nvd.nist.gov/vuln/detail/CVE-2026-59923
- https://github.com/lepture/mistune/commit/c7101fcbb6e8790e8e39157c5ca2238fc6dd6cbc
- 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-2026-2211.yaml
CVE-2026-59923 · published · modified · JSON
PyPI/mistune CVE-2026-59923: medium 6.1, EPSS 0.35%
Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, HTMLRenderer.safe_url() does not block percent-encoded javascript URIs, allowing attacker-supplied Markdown links or ima
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-2026-2211
- https://github.com/lepture/mistune/releases/tag/v3.3.0
- https://github.com/lepture/mistune/commit/c7101fcbb6e8790e8e39157c5ca2238fc6dd6cbc
- https://github.com/lepture/mistune/security/advisories/GHSA-8c25-4j27-2rv3
CVE-2026-59923 · published · modified · JSON