How many CVEs have patched parse_emphasis?

2 published CVEs changed parse_emphasis in lepture/mistune, in 2 distinct patches totalling 63 changed lines, between 2022 and 2026.

What is the latest CVE that changed parse_emphasis?

CVE-2026-59925 (inline_parser: quadratic-time parsing on long runs of `**x**` and `***x***` emphasis pairs), published 2026-07-08, changed lines 268 to 269 of src/mistune/inline_parser.py.

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

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

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

Function

2 files

parse_emphasis

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

Defined in 2 files

Last patched July 8, 2026

2

CVEs

That changed this function

2

Distinct patches

Backports counted once

63

Lines changed

Added plus removed

2022–2026

Years

By CVE publication date

Overview

parse_emphasis in lepture/mistune was changed by 2 published CVE fixes between 2022 and 2026, in 2 distinct patches that added or removed 63 lines in total.

The name occurs in 2 files: mistune/inlines.py, src/mistune/inline_parser.py.

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 parse_emphasis, newest first, with the lines each fix touched.

inline_parser: quadratic-time parsing on long runs of `**x**` and `***x***` emphasis pairs
CVE-2026-59925 · src/mistune/inline_parser.py · lines 268–269 · +2 −46
High · CVSS 7.5
EPSS 0.6%2026-07-08
Mistune vulnerable to catastrophic backtracking
CVE-2022-34749 · mistune/inlines.py · lines 182–192 · +10 −5
High · CVSS 8.8
EPSS 1.6%2022-07-25

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Other functions in these files

Functions in the same files 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 parse_emphasis.

How many CVEs have patched parse_emphasis?: 2 published CVEs changed parse_emphasis in lepture/mistune, in 2 distinct patches totalling 63 changed lines, between 2022 and 2026.
What is the latest CVE that changed parse_emphasis?: CVE-2026-59925 (inline_parser: quadratic-time parsing on long runs of `**x**` and `***x***` emphasis pairs), published 2026-07-08, changed lines 268 to 269 of src/mistune/inline_parser.py.
How does parse_emphasis compare to the rest of lepture/mistune?: lepture/mistune has 14 CVEs with a located fix in total; 2 of them changed parse_emphasis.
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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