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mistune_project / mistune CVEs

Beta · best-effort

17 CVEs tagged to mistune_project / mistune0 Critical, 4 High, 13 Medium, 0 Low, 0 Unrated.

CVE-2026-59930

Published Jul 8, 2026

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the toc plugin and TableOfContents directive generate heading IDs as predictable toc_N values witho…

CVSS 4.3 · Medium
evidence mentions
4
Buzz score
26.1
Vendor/product tagsBeta · best-effort

CVE-2026-59929

Published Jul 8, 2026

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the safe_url filter in src/mistune/renderers/html.py blocks only javascript:, vbscript:, file:, and…

CVSS 6.1 · Medium
evidence mentions
3
Buzz score
18.9
Vendor/product tagsBeta · best-effort

CVE-2026-59928

Published Jul 8, 2026

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 quadrati…

CVSS 7.5 · High
evidence mentions
4
Buzz score
26.1
Vendor/product tagsBeta · best-effort

CVE-2026-59927

Published Jul 8, 2026

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the Include directive in src/mistune/directives/include.py detects only direct self-includes and no…

CVSS 5.3 · Medium
evidence mentions
3
Buzz score
18.9
Vendor/product tagsBeta · best-effort

CVE-2026-59926

Published Jul 8, 2026

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, render_admonition() in src/mistune/directives/admonition.py concatenates the Admonition directive :…

CVSS 5.3 · Medium
evidence mentions
4
Buzz score
26.1
Vendor/product tagsBeta · best-effort

CVE-2026-59925

Published Jul 8, 2026

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, long sequences of well-formed double-asterisk or triple-asterisk emphasis pairs around a character…

CVSS 7.5 · High
evidence mentions
4
Buzz score
26.1
Vendor/product tagsBeta · best-effort

CVE-2026-59924

Published Jul 8, 2026

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, Include.parse() joins and normalizes user-supplied include paths without verifying that the result…

CVSS 5.9 · Medium
evidence mentions
3
Buzz score
18.9
Vendor/product tagsBeta · best-effort

CVE-2026-59923

Published Jul 8, 2026

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…

CVSS 6.1 · Medium
evidence mentions
3
Buzz score
18.9
Vendor/product tagsBeta · best-effort

CVE-2026-59922

Published Jul 8, 2026

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, a run of closed tilde, equals-sign, or caret marker pairs around a character causes quadratic work…

CVSS 7.5 · High
evidence mentions
4
Buzz score
26.1
Vendor/product tagsBeta · best-effort

CVE-2026-44899

Published May 26, 2026

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, the Image directive plugin validates the :width: and :height: options with a regex compiled as _num…

CVSS 4.7 · Medium
evidence mentions
3
Buzz score
23.9
Vendor/product tagsBeta · best-effort

CVE-2026-44898

Published May 26, 2026

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, render_toc_ul() builds a <ul> table-of-contents tree from a list of (level, id, text) tuples. Both…

CVSS 6.1 · Medium
evidence mentions
3
Buzz score
23.9
Vendor/product tagsBeta · best-effort

CVE-2026-44897

Published May 26, 2026

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, HTMLRenderer.heading() builds the opening <hN> tag by string-concatenating the id attribute value d…

CVSS 6.1 · Medium
evidence mentions
3
Buzz score
23.9
Vendor/product tagsBeta · best-effort

CVE-2026-44896

Published May 26, 2026

Mistune is a Python Markdown parser with renderers and plugins. In 3.2.0 and earlier, in src/mistune/directives/image.py, the render_figure() function concatenates figclass and fi…

CVSS 5.3 · Medium
evidence mentions
3
Buzz score
23.9
Vendor/product tagsBeta · best-effort

CVE-2026-44708

Published May 26, 2026

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, the mistune math plugin renders inline math ($...$) and block math ($$...$$) by concatenating the r…

CVSS 6.1 · Medium
evidence mentions
3
Buzz score
23.9
Vendor/product tagsBeta · best-effort

CVE-2017-15612

Published Oct 19, 2017

mistune.py in Mistune 0.7.4 allows XSS via an unexpected newline (such as in java\nscript:) or a crafted email address, related to the escape and autolink functions.

CVSS 6.1 · Medium
Vendor/product tagsBeta · best-effort
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