Update dependency svelte to v4 [SECURITY] #21
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This PR contains the following updates:
^3.54.0
->^4.0.0
GitHub Vulnerability Alerts
CVE-2024-45047
Summary
A potential XSS vulnerability exists in Svelte for versions prior to 4.2.19.
Details
Svelte improperly escapes HTML on server-side rendering. It converts strings according to the following rules:
"
->"
&
->&
<
-><
&
->&
The assumption is that attributes will always stay as such, but in some situation the final DOM tree rendered on browsers is different from what Svelte expects on server-side rendering. This may be leveraged to perform XSS attacks. More specifically, this can occur when injecting malicious content into an attribute within a
<noscript>
tag.PoC
A vulnerable page (
+page.svelte
):If a user accesses the following URL,
then,
alert(123)
will be executed.Impact
XSS, when using an attribute within a noscript tag
Release Notes
sveltejs/svelte (svelte)
v4.2.19
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Patch Changes
fix: ensure typings for
<svelte:options>
are picked up (#12902)fix: escape
<
in attribute strings (#12989)v4.2.18
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Patch Changes
v4.2.17
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Patch Changes
v4.2.16
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Patch Changes
v4.2.15
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Patch Changes
v4.2.14
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Patch Changes
v4.2.13
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Patch Changes
v4.2.12
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Patch Changes
svelte:component
props when there are spread props (#10604)v4.2.11
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Patch Changes
connectedCallback
(#10466)v4.2.10
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Patch Changes
fix: add
scrollend
event type (#10336)fix: add
fetchpriority
attribute type (#10390)fix: Add
miter-clip
andarcs
tostroke-linejoin
attribute (#10377)fix: make inline doc links valid (#10366)
v4.2.9
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Patch Changes
fix: add types for popover attributes and events (#10042)
fix: add
gamepadconnected
andgamepaddisconnected
events (#9864)fix: make
@types/estree
a dependency (#10149)fix: bump
axobject-query
(#10167)v4.2.8
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Patch Changes
v4.2.7
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Patch Changes
v4.2.6
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Patch Changes
v4.2.5
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Patch Changes
v4.2.4
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Patch Changes
v4.2.3
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Patch Changes
fix: improve a11y-click-events-have-key-events message (#9358)
fix: more robust hydration of html tag (#9184)
v4.2.2
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Patch Changes
fix: support camelCase properties on custom elements (#9328)
fix: add missing plaintext-only value to contenteditable type (#9242)
chore: upgrade magic-string to 0.30.4 (#9292)
fix: ignore trailing comments when comparing nodes (#9197)
v4.2.1
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Patch Changes
fix: update style directive when style attribute is present and is updated via an object prop (#9187)
fix: css sourcemap generation with unicode filenames (#9120)
fix: do not add module declared variables as dependencies (#9122)
fix: handle
svelte:element
with dynamic this and spread attributes (#9112)fix: silence false positive reactive component warning (#9094)
fix: head duplication when binding is present (#9124)
fix: take custom attribute name into account when reflecting property (#9140)
fix: add
indeterminate
to the list of HTMLAttributes (#9180)fix: recognize option value on spread attribute (#9125)
v4.2.0
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Minor Changes
svelteHTML
from language-tools into core to load the correctsvelte/element
types (#9070)v4.1.2
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Patch Changes
fix: allow child element with slot attribute within svelte:element (#9038)
fix: Add data-* to svg attributes (#9036)
v4.1.1
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Patch Changes
svelte:component
spread props change not picked up (#9006)v4.1.0
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Minor Changes
Patch Changes
fix: ensure
svelte:component
evaluates props once (#8946)fix: remove
let:variable
slot bindings from select binding dependencies (#8969)fix: handle destructured primitive literals (#8871)
perf: optimize imports that are not mutated or reassigned (#8948)
fix: don't add accessor twice (#8996)
v4.0.5
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Patch Changes
v4.0.4
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Patch Changes
fix: claim svg tags in raw mustache tags correctly (#8910)
fix: repair invalid raw html content during hydration (#8912)
v4.0.3
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Patch Changes
v4.0.2
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Patch Changes
fix: reflect all custom element prop updates back to attribute (#8898)
fix: shrink custom element baseline a bit (#8858)
fix: use non-destructive hydration for all
@html
tags (#8880)fix: align
disclose-version
exports specification (#8874)fix: check srcset when hydrating to prevent needless requests (#8868)
v4.0.1
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Patch Changes
fix: ensure identifiers in destructuring contexts don't clash with existing ones (#8840)
fix: ensure
createEventDispatcher
andActionReturn
work with types from generic function parameters (#8872)fix: apply transition to
<svelte:element>
with local transition (#8865)fix: relax a11y "no redundant role" rule for li, ul, ol (#8867)
fix: remove tsconfig.json from published package (#8859)
v4.0.0
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Major Changes
breaking: Minimum supported Node version is now Node 16 (#8566)
breaking: Minimum supported webpack version is now webpack 5 (#8515)
breaking: Bundlers must specify the
browser
condition when building a frontend bundle for the browser (#8516)breaking: Minimum supported vite-plugin-svelte version is now 2.4.1. SvelteKit users can upgrade to 1.20.0 or newer to ensure a compatible version (#8516)
breaking: Minimum supported
rollup-plugin-svelte
version is now 7.1.5 (198dbcf)breaking: Minimum supported
svelte-loader
is now 3.1.8 (198dbcf)breaking: Minimum supported TypeScript version is now TypeScript 5 (it will likely work with lower versions, but we make no guarantees about that) (#8488)
breaking: Remove
svelte/register
hook, CJS runtime version and CJS compiler output (#8613)breaking: Stricter types for
createEventDispatcher
(see PR for migration instructions) (#7224)breaking: Stricter types for
Action
andActionReturn
(see PR for migration instructions) (#7442)breaking: Stricter types for
onMount
- now throws a type error when returning a function asynchronously to catch potential mistakes around callback functions(see PR for migration instructions) (#8136)
breaking: Overhaul and drastically improve creating custom elements with Svelte (see PR for list of changes and migration instructions) (#8457)
breaking: Deprecate
SvelteComponentTyped
in favor ofSvelteComponent
(#8512)breaking: Make transitions local by default to prevent confusion around page navigations (#6686)
breaking: Error on falsy values instead of stores passed to
derived
(#7947)breaking: Custom store implementers now need to pass an
update
function additionally to theset
function (#6750)breaking: Do not expose default slot bindings to named slots and vice versa (#6049)
breaking: Change order in which preprocessors are applied (#8618)
breaking: The runtime now makes use of
classList.toggle(name, boolean)
which does not work in very old browsers (#8629)breaking: apply
inert
to outroing elements (#8628)breaking: use
CustomEvent
constructor instead of deprecatedcreateEvent
method (#8775)Minor Changes
Add a way to modify attributes for script/style preprocessors (#8618)
Improve hydration speed by adding
data-svelte-h
attribute to detect unchanged HTML elements (#7426)Add
a11y no-noninteractive-element-interactions
rule (#8391)Add
a11y-no-static-element-interactions
rule (#8251)Allow
#each
to iterate over iterables likeSet
,Map
etc (#7425)Improve duplicate key error for keyed
each
blocks (#8411)Warn about
:
in attributes and props to prevent ambiguity with Svelte directives (#6823)feat: add version info to
window
. You can opt out by settingdiscloseVersion
tofalse
in the compiler options (#8761)feat: smaller minified output for destructor chunks (#8763)
Patch Changes
Bind
null
option and input values consistently (#8312)Allow
$store
to be used with changing values including nullish values (#7555)Initialize stylesheet with
/* empty */
to enable setting CSP directive that also works in Safari (#7800)Treat slots as if they don't exist when using CSS adjacent and general sibling combinators (#8284)
Fix transitions so that they don't require a
style-src 'unsafe-inline'
Content Security Policy (CSP) (#6662).Explicitly disallow
var
declarations extending the reactive statement scope (#6800)Improve error message when trying to use
animate:
directives on inline components (#8641)fix: export ComponentType from
svelte
entrypoint (#8578)fix: never use html optimization for mustache tags in hydration mode (#8744)
fix: derived store types (#8578)
Generate type declarations with dts-buddy (#8578)
fix: ensure types are loaded with all TS settings (#8721)
fix: account for preprocessor source maps when calculating meta info (#8778)
chore: deindent cjs output for compiler (#8785)
warn on boolean compilerOptions.css (#8710)
fix: export correct SvelteComponent type (#8721)
v3.59.2
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<textarea bind:value={...}>
values in SSRv3.59.1
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a11y-autocomplete-valid
(#8567)v3.59.0
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ResizeObserver
bindingscontentRect
/contentBoxSize
/borderBoxSize
/devicePixelContentBoxSize
(#8022)devicePixelRatio
binding for<svelte:window>
(#8285)fullscreenElement
andvisibilityState
bindings for<svelte:document>
(#8507)a11y-autocomplete-valid
warning (#8520)width
/height
attributes when spreading (#6752)style:
directive when using spread (#8438)style:
directive property when value isundefined
(#8462)VERSION
compiler export (#8498)a11y-no-redundant-roles
warning (#8536)v3.58.0
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bind:innerText
forcontenteditable
elements (#3311)@container
queries (#6969)preserveComments
in DOM output (#7182)document
fortarget
in typings (#7554)a11y-interactive-supports-focus
warning (#8392)a11y-no-noninteractive-element-to-interactive-role
warning (#8402)<textarea value={...}>
values in SSR (#8429)v3.57.0
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<svelte:document>
(#3310)no-noninteractive-element-to-interactive-role
(#8167)style:
directive precedence overstyle=
attribute (#7475)<option>
withselected
attribute when initial state isundefined
(#8361)bind:group
members being spread across multiple control flow blocks (#8372)fly
andblur
transitions (#7623)v3.56.0
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|stopImmediatePropagation
event modifier (#5085)axis
parameter toslide
transition (#6182)readonly
utility to convertwritable
store to readonly (#6518)readyState
binding for media elements (#6666)naturalWidth
andnaturalHeight
bindings (#7771)<!-- svelte-ignore ... -->
on components (#8082)aria-activedescendant-has-tabindex
: checks that elements witharia-activedescendant
have atabindex
(#8172)role-supports-aria-props
: checks that the (implicit) element role supports the given aria attributes (#8195)data-sveltekit-replacestate
anddata-sveltekit-keepfocus
attribute typings (#8281)<svelte:component>
(#4129)bind:offsetHeight
updates initially (#4233):global()
selectors (#6272)noreferrer
warning less zealous (#6289)<video aria-hidden="true">
(#7874)<svelte:element>
(#7939)aria-label
(#8296)<input type="search">
and<input type="url">
(#7027)<option>
by default when the initial bound value is undefined (#7041){@​html}
tags inside<template>
tags (#7364)afterUpdate
is not called afteronDestroy
(#7476)inert
attribute (#7500)<input>
value persists when swapping elements with spread attributes in an{#each}
block (#7578)<svelte:element>
with transitions (#7948)const
when destructuring (#7964)trusted-types
CSP compatibility for Web Components (#8134)<svelte:element>
output code for static tag and static attribute (#8161)bind:group
value is set toundefined
(#8214){#each}
containing a non-keyed{#each}
(#8282)Configuration
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