> The Regular expression Denial of Service (ReDoS) is a Denial of Service attack, that exploits the fact that most Regular Expression implementations may reach extreme situations that cause them to work very slowly (exponentially related to input size). An attacker can then cause a program using a Regular Expression to enter these extreme situations and then hang for a very long time.
If are you are using Highlight.js to highlight user-provided data you are possibly vulnerable. On the client-side (in a browser or Electron environment) risks could include lengthy freezes or crashes... On the server-side infinite freezes could occur... effectively preventing users from accessing your app or service (ie, Denial of Service).
This is an issue with grammars shipped with the parser (and potentially 3rd party grammars also), not the parser itself. If you are using Highlight.js with any of the following grammars you are vulnerable. If you are using highlightAuto to detect the language (and have any of these grammars registered) you are vulnerable.
All versions prior to 10.4.1 are vulnerable, including version 9.18.5.
This is a major release. As such it contains breaking changes which may require action from users. Most of the breaking changes work was done by the current maintainer [Josh Goebel][] (ref: #2558) while many other contributors contributed many other changes for this release. You'll find that list below the breaking changes summary.
Please read VERSION_11_UPGRADE.md for a detailed summary of all breaking changes. The below list should only be considered to be a summary.
Deprecations / Removals / API Changes:
initHighlighting() and initHighlightingOnLoad() deprecated. Use highlightAll().
highlightBlock(el) deprecated. Use highlightElement(el)
before:highlightBlock & after:highlightBlock callbacks deprecated. Use equivalent highlightElement callbacks.
highlight(languageName, code, ignoreIllegals, continuation) signature deprecated. Use highlight(code, {language, ignoreIllegals}).
Deprecated highlight() signature no longer supports continuation argument.
tabReplace option removed. Consider a plugin.
useBR option removed. Consider a plugin or CSS.
requireLanguage() removed. Use getLanguage().
endSameAsBegin mode key removed. Use hljs.END_SAME_AS_BEGIN.
lexemes mode key removed. Use keywords.$pattern.
The return values/keys of some APIs have changed slightly.
Security:
HTML auto-passthru has been removed. Consider a plugin.
Unescaped HTML is now stripped (for security). A warning is logged to the console. (#3057) [Josh Goebel][]
Themes:
The default padding of all themes increases (0.5em => 1em).
schoolbook has been updated to remove the lined background.
github updated to better match modern GitHub (#1616) [Jan Pilzer][]
github-gist has been removed in favor of github [Jan Pilzer][]
Base16 named themes have been updated to their "canonical" versions
nnfx updated for v11 xml styles and improved css support
Language Grammars:
Default CDN build drops support for several languages.
Some language grammar files have been removed.
Some redundant language aliases have been removed.
Other changes
Parser:
enh(vala) improve language detection for Vala (#3195) [Konrad Rudolph][]
enh(r) add support for operators, fix number highlighting bug (#3194, #3195) [Konrad Rudolph][]
enh(parser) add beginScope and endScope to allow separate scoping begin and end (#3159) [Josh Goebel][]
enh(parsed) endScope now supports multi-class matchers as well (#3159) [Josh Goebel][]
enh(parser) highlightElement now always tags blocks with a consistent language-[name] class [Josh Goebel][]
(fix) use console.log for .js.js deprecation warning (#3222) Josh Goebel
(fix) do not restrict exports from cdn-assets (#3223) Josh Goebel
Version 11.0.0
This is a major release. As such it contains breaking changes which may require action from users. Please read VERSION_11_UPGRADE.md for a detailed summary of all breaking changes.
Potentially breaking changes
Unless otherwise attributed items below are thanks to Josh Goebel (ref: #2558).
The below list should only be considered to be a high-level summary.
Deprecations / Removals / API Changes:
initHighlighting() and initHighlightingOnLoad() deprecated. Use highlightAll().
highlightBlock(el) deprecated. Use highlightElement(el)
before:highlightBlock & after:highlightBlock callbacks deprecated. Use equivalent highlightElement callbacks.
highlight(languageName, code, ignoreIllegals, continuation) signature deprecated. Use highlight(code, {language, ignoreIllegals}).
Deprecated highlight() signature no longer supports continuation argument.
tabReplace option removed. Consider a plugin.
useBR option removed. Consider a plugin or CSS.
requireLanguage() removed. Use getLanguage().
endSameAsBegin mode key removed. Use hljs.END_SAME_AS_BEGIN.
lexemes mode key removed. Use keywords.$pattern.
The return values/keys of some APIs have changed slightly.
Security:
HTML auto-passthru has been removed. Consider a plugin.
Unescaped HTML is now stripped (for security). A warning is logged to the console. (#3057) Josh Goebel
Themes:
The default padding of all themes increases (0.5em => 1em).
schoolbook has been updated to remove the lined background.
github updated to better match modern GitHub (#1616) [Jan Pilzer][]
github-gist has been removed in favor of github [Jan Pilzer][]
Base16 named themes have been updated to their "canonical" versions
nnfx updated for v11 xml styles and improved css support
Language Grammars:
Default CDN build drops support for several languages.
This version was pushed to npm by highlightjs_bot, a new releaser for highlight.js since your current version.
Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.
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Bumps highlight.js from 9.18.5 to 11.0.1. This update includes a security fix.
Vulnerabilities fixed
Sourced from The GitHub Security Advisory Database.
... (truncated)
Release notes
Sourced from highlight.js's releases.
... (truncated)
Changelog
Sourced from highlight.js's changelog.
... (truncated)
Commits
1cf31f0
(chore) release 11.0.1fbf223a
(fix) use console.log for .js.js deprecation warning9268dc2
(fix) do not restrict exports from cdn-assets2185721
bump for CDN redeploy0261c45
(chore) update browser tests1c7c696
(chore) bump some deps970a4d3
(fix) fire after:highlightElement after DOM is updated947e925
bump version to 11.0.05dc5176
(chore) dual package (#3188)15ed6a4
enh(r) Add operators and punctuation (#3195)Maintainer changes
This version was pushed to npm by highlightjs_bot, a new releaser for highlight.js since your current version.
Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
@dependabot rebase
.Dependabot commands and options
You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot merge` will merge this PR after your CI passes on it - `@dependabot squash and merge` will squash and merge this PR after your CI passes on it - `@dependabot cancel merge` will cancel a previously requested merge and block automerging - `@dependabot reopen` will reopen this PR if it is closed - `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually - `@dependabot ignore this major version` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this minor version` will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this dependency` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself) - `@dependabot use these labels` will set the current labels as the default for future PRs for this repo and language - `@dependabot use these reviewers` will set the current reviewers as the default for future PRs for this repo and language - `@dependabot use these assignees` will set the current assignees as the default for future PRs for this repo and language - `@dependabot use this milestone` will set the current milestone as the default for future PRs for this repo and language - `@dependabot badge me` will comment on this PR with code to add a "Dependabot enabled" badge to your readme Additionally, you can set the following in your Dependabot [dashboard](https://app.dependabot.com): - Update frequency (including time of day and day of week) - Pull request limits (per update run and/or open at any time) - Automerge options (never/patch/minor, and dev/runtime dependencies) - Out-of-range updates (receive only lockfile updates, if desired) - Security updates (receive only security updates, if desired)