How many CVEs have patched HTMLRenderer?

2 published CVEs changed HTMLRenderer in lepture/mistune, in 1 distinct patches totalling 16 changed lines, between 2026 and 2026.

What is the latest CVE that changed HTMLRenderer?

CVE-2026-59929 (Mistune renderers/html.safe_url: HARMFUL_PROTOCOLS list misses legacy and chained schemes that historically chain to `javascript:` execution), published 2026-07-08, changed lines 18 to 25 of src/mistune/renderers/html.py.

How does HTMLRenderer compare to the rest of lepture/mistune?

lepture/mistune has 14 CVEs with a located fix in total; 2 of them changed HTMLRenderer.

What do the line numbers refer to?

Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

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lepture/mistune

Class

HTMLRenderer

Name: HTMLRenderer in lepture/mistune: CVE fixes
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

src/mistune/renderers/html.py

Last patched July 8, 2026

2

CVEs

That changed this function

1

Distinct patches

Backports counted once

16

Lines changed

Added plus removed

2026

Years

By CVE publication date

Overview

HTMLRenderer in lepture/mistune was changed by 2 published CVE fixes in 2026, in 1 distinct patches that added or removed 16 lines in total.

lepture/mistune has 14 CVEs with a located fix in total, so 14% of them touched this function.

CVEs that patched it

Every published CVE whose fix changed HTMLRenderer, newest first, with the lines each fix touched.

Mistune renderers/html.safe_url: HARMFUL_PROTOCOLS list misses legacy and chained schemes that historically chain to `javascript:` execution
CVE-2026-59929 · lines 18–25 · +8 −0
Medium · CVSS 6.1
EPSS 0.3%2026-07-08
Mistune: XSS via percent-encoded javascript URI bypass in safe_url()
CVE-2026-59923 · lines 18–25 · +8 −0
Medium · CVSS 6.1
EPSS 0.3%2026-07-08

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Other functions in these files

Functions in the same file that CVE fixes also changed.

Other hotspots in the repository

Functions in lepture/mistune changed by the most CVE fixes.

__init__2 CVEs · src/mistune/inline_parser.py render_html_include2 CVEs · src/mistune/directives/include.py parse2 CVEs · src/mistune/directives/include.py _unquote_url2 CVEs · src/mistune/renderers/html.py safe_url2 CVEs · src/mistune/renderers/html.py render_figure2 CVEs · src/mistune/directives/image.py

All patched functions in lepture/mistune

Frequently asked questions

Common questions about CVE fixes to HTMLRenderer.

How many CVEs have patched HTMLRenderer?: 2 published CVEs changed HTMLRenderer in lepture/mistune, in 1 distinct patches totalling 16 changed lines, between 2026 and 2026.
What is the latest CVE that changed HTMLRenderer?: CVE-2026-59929 (Mistune renderers/html.safe_url: HARMFUL_PROTOCOLS list misses legacy and chained schemes that historically chain to `javascript:` execution), published 2026-07-08, changed lines 18 to 25 of src/mistune/renderers/html.py.
How does HTMLRenderer compare to the rest of lepture/mistune?: lepture/mistune has 14 CVEs with a located fix in total; 2 of them changed HTMLRenderer.
What do the line numbers refer to?: Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

References

Fix locations are computed by RadicalNotion.AI from the upstream patch diff of each CVE. CVE data is sourced from the CVE Program.

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