Issues

• physics-lab

  showdownjs/showdown#1103 · Filter by author Lemi-Demissie opened on Oct 17, 2026

• Guard against overlapping-quantifier ReDoS in subparser regexes

  security
  showdownjs/showdown#1050 · Filter by author tivie opened on Jun 17, 2026

• encodeAmpsAndAngles runs after italicsAndBold, causing HTML parsing errors with angle brackets

  bug
  showdownjs/showdown#1043 · Filter by author prabinbessie opened on Jan 29, 2026
  2

  

• Deprecated usage of RegExp.$1 etc. leads to problems with rhino engine (perhaps newer versions)

  showdownjs/showdown#1041 · Filter by author foto-andreas opened on Jan 8, 2026
  1

• demo page is hacked

  showdownjs/showdown#1040 · Filter by author konsultanedu-official opened on Dec 23, 2025
  3

  

• Saving some changes to the questionnaire questions is not intuitive

  showdownjs/showdown#1036 · Filter by author giorgiofraschini opened on May 29, 2025

• Substitute of the recipient - Need to restrict visibility

  showdownjs/showdown#1035 · Filter by author giorgiofraschini opened on May 29, 2025

• JSON string / object

  showdownjs/showdown#1034 · Filter by author khteh opened on May 22, 2025
  1

• Need to document using replace with a function

  showdownjs/showdown#1033 · Filter by author lukehutch opened on May 21, 2025

• Fixing bug on updating of report

  showdownjs/showdown#1032 · Filter by author giorgiofraschini opened on May 15, 2025

• Added additional an empty html comment when convert html to markdown!

  showdownjs/showdown#1029 · Filter by author mrhdias opened on Feb 16, 2025
  1

• Vulnerability found by Webstorm through Mend.io and NPM

  showdownjs/showdown#1028 · Filter by author TheDogHusky opened on Feb 2, 2025
  5

• React 19 support?

  showdownjs/showdown#1027 · Filter by author adrianoresende opened on Jan 26, 2025
  1

• [Tutorial] Bug in example code 'Add default class for each HTML element' - adding classes only to first element

  showdownjs/showdown#1026 · Filter by author wykopx opened on Jan 20, 2025

• Option to disable heading tags

  showdownjs/showdown#1025 · Filter by author kethinov opened on Jan 16, 2025
  1

• spacing on unordered list

  showdownjs/showdown#1024 · Filter by author varminz12 opened on Jan 16, 2025

• Table/horizontal line rendering bug

  showdownjs/showdown#1023 · Filter by author FireyDeath4 opened on Jan 11, 2025

• Tasklist seemingly not working

  showdownjs/showdown#1022 · Filter by author GlitchDevX opened on Dec 30, 2024

• Does the project still active?

  showdownjs/showdown#1021 · Filter by author knighttower opened on Nov 2, 2024
  6

  

• [Extension] showdown-spoiler, support for spoiler tags within markdown

  showdownjs/showdown#1019 · Filter by author kvmet opened on Sep 13, 2024

• Typescript and Node.js

  showdownjs/showdown#1018 · Filter by author Masadow opened on Sep 9, 2024
  1

• Unordered list nested inside an ordered list causes numbers to be incorrect

  showdownjs/showdown#1015 · Filter by author daltonclaybrook opened on Aug 15, 2024
  6

• Code block inside a list with extra lines and spaces sometimes break

  showdownjs/showdown#1014 · Filter by author AvikChakraborty18 opened on Jul 16, 2024

• Incomplete string escaping or encoding

  showdownjs/showdown#1011 · Filter by author flyingzebra opened on Jun 20, 2024

• More complete preview of partial markdown

  showdownjs/showdown#1010 · Filter by author andersborgabiro opened on May 24, 2024