CVE-2026-49215 Symfony UX: CSRF Protection Bypass in symfony/ux-live-component — Accept Header is CORS-Safelisted

Symfony UX is a JavaScript ecosystem for Symfony. From 2.22.0 until 2.36.0 and 3.1.0, Symfony\UX\LiveComponent\EventListener\LiveComponentSubscriber::isLiveComponentRequest gates LiveAction invocations on Accept: application/vnd.live-component+html, but the Accept header is CORS-safelisted and...

EUVD-2026-45218

Symfony UX is a JavaScript ecosystem for Symfony. From 2.22.0 until 2.36.0 and 3.1.0, Symfony\UX\LiveComponent\EventListener\LiveComponentSubscriber::isLiveComponentRequest gates LiveAction invocations on Accept: application/vnd.live-component+html, but the Accept header is CORS-safelisted and...

CVE-2026-49216 Symfony UX: XSS in symfony/ux-autocomplete via unescaped AJAX response data

Symfony UX is a JavaScript ecosystem for Symfony. From 2.2.0 until 2.36.0 and 3.1.0, the Stimulus controller in symfony/ux-autocomplete renders AJAX response items in createAutocompleteWithRemoteData by interpolating the text field into HTML template literals $itemlabelField rather than text,...

CVE-2026-49216 Symfony UX: XSS in symfony/ux-autocomplete via unescaped AJAX response data

Symfony UX is a JavaScript ecosystem for Symfony. From 2.2.0 until 2.36.0 and 3.1.0, the Stimulus controller in symfony/ux-autocomplete renders AJAX response items in createAutocompleteWithRemoteData by interpolating the text field into HTML template literals $itemlabelField rather than text,...

CVE-2026-49216

Symfony UX is a JavaScript ecosystem for Symfony. From 2.2.0 until 2.36.0 and 3.1.0, the Stimulus controller in symfony/ux-autocomplete renders AJAX response items in createAutocompleteWithRemoteData by interpolating the text field into HTML template literals $itemlabelField rather than text,...

CVE-2026-49216

CVE-2026-49216 (Symfony UX Autocomplete) : The Stimulus controller in symfony/ux-autocomplete renders AJAX response items by interpolating item[labelField] directly into HTML, causing stored XSS when values come from user-supplied content. Affected: 2.2.0 through 2.36.0 and 3.1.0. Impact is that ...

CVE-2026-49211 Symfony UX: Information exposure via unescaped LIKE wildcards in EntitySearchUtil

Symfony UX is a JavaScript ecosystem for Symfony. From 2.2.0 until 2.36.0 and 3.1.0, Symfony\UX\Autocomplete\Doctrine\EntitySearchUtil::addSearchClause builds the LIKE expression used by the autocomplete endpoint by wrapping the client-supplied query in %...% without escaping SQL LIKE wildcards %...

CVE-2026-49211 Symfony UX: Information exposure via unescaped LIKE wildcards in EntitySearchUtil

Symfony UX is a JavaScript ecosystem for Symfony. From 2.2.0 until 2.36.0 and 3.1.0, Symfony\UX\Autocomplete\Doctrine\EntitySearchUtil::addSearchClause builds the LIKE expression used by the autocomplete endpoint by wrapping the client-supplied query in %...% without escaping SQL LIKE wildcards %...

CVE-2026-49211

Symfony UX Autocomplete vulnerable in versions 2.2.0–2.35.0 and 3.1.0 where addSearchClause() builds LIKE literals with client input wrapped in %...%, without escaping %, _, or , allowing unauthenticated users to turn BaseEntityAutocompleteType into a broad matcher across default searchable_field...

CVE-2026-49211 Symfony UX: Information exposure via unescaped LIKE wildcards in EntitySearchUtil

Symfony UX is a JavaScript ecosystem for Symfony. From 2.2.0 until 2.36.0 and 3.1.0, Symfony\UX\Autocomplete\Doctrine\EntitySearchUtil::addSearchClause builds the LIKE expression used by the autocomplete endpoint by wrapping the client-supplied query in %...% without escaping SQL LIKE wildcards %...

CVE-2026-49208

CVE-2026-49208 (Symfony UX LiveComponent) : Vulnerability occurs when a writable #[LiveProp] is typed as DateTimeInterface with no explicit format, allowing client-supplied strings like now/tomorrow/+10 years to bypass checks via LiveComponentHydrator::hydrateObjectValue(), effectively moving tim...

CVE-2026-49208 Symfony UX: Format-less date LiveProps parsed with the permissive DateTime constructor

Symfony UX is a JavaScript ecosystem for Symfony. From 2.8.0 until 2.36.0 and 3.1.0, when a LiveProp is typed as DateTimeInterface and no explicit format is configured, Symfony\UX\LiveComponent\LiveComponentHydrator::hydrateObjectValue falls back to new $className$value, allowing client-supplied...

CVE-2026-49208 Symfony UX: Format-less date LiveProps parsed with the permissive DateTime constructor

Symfony UX is a JavaScript ecosystem for Symfony. From 2.8.0 until 2.36.0 and 3.1.0, when a LiveProp is typed as DateTimeInterface and no explicit format is configured, Symfony\UX\LiveComponent\LiveComponentHydrator::hydrateObjectValue falls back to new $className$value, allowing client-supplied...

CVE-2026-49210 Symfony UX: XSS in symfony/ux-live-component via attacker-controlled child component tag

Symfony UX is a JavaScript ecosystem for Symfony. From 2.8.0 until 2.36.0 and 3.1.0, Symfony\UX\LiveComponent\Util\ChildComponentPartialRenderer::createHtml interpolates the client-controlled childrenid.tag value from LiveComponentSubscriber and InterceptChildComponentRenderSubscriber directly in...

CVE-2026-49210

Symfony UX is a JavaScript ecosystem for Symfony. From 2.8.0 until 2.36.0 and 3.1.0, Symfony\UX\LiveComponent\Util\ChildComponentPartialRenderer::createHtml interpolates the client-controlled childrenid.tag value from LiveComponentSubscriber and InterceptChildComponentRenderSubscriber directly in...

CVE-2026-49210

Symfony UX: XSS in LiveComponent due to ChildComponentPartialRenderer::createHtml() injecting client-controlled children[id].tag into HTML without escaping. Affected: 2.8.0–2.36.0 and 3.1.0. Exploitation potential includes arbitrary HTML, e.g., [removed] tags, on re-renders containing at least on...

CVE-2026-49210 Symfony UX: XSS in symfony/ux-live-component via attacker-controlled child component tag

Symfony UX is a JavaScript ecosystem for Symfony. From 2.8.0 until 2.36.0 and 3.1.0, Symfony\UX\LiveComponent\Util\ChildComponentPartialRenderer::createHtml interpolates the client-controlled childrenid.tag value from LiveComponentSubscriber and InterceptChildComponentRenderSubscriber directly in...

CVE-2026-49210 Symfony UX: XSS in symfony/ux-live-component via attacker-controlled child component tag

Symfony UX is a JavaScript ecosystem for Symfony. From 2.8.0 until 2.36.0 and 3.1.0, Symfony\UX\LiveComponent\Util\ChildComponentPartialRenderer::createHtml interpolates the client-controlled childrenid.tag value from LiveComponentSubscriber and InterceptChildComponentRenderSubscriber directly in...

CVE-2026-49212 Symfony UX: LiveComponentHydrator HMAC checksum lacks component and slot binding

Symfony UX is a JavaScript ecosystem for Symfony. From 2.8.0 until 2.36.0 and 3.1.0, the HMAC computed by Symfony\UX\LiveComponent\LiveComponentHydrator covered only sorted prop key/value pairs and did not include the component name, the slot identifier props vs propsFromParent, or request contex...

CVE-2026-49209 Symfony UX: Denial of service in symfony/ux-live-component via unbounded batch action requests

Symfony UX is a JavaScript ecosystem for Symfony. From 2.5.0 until 2.36.0 and 3.1.0, Symfony\UX\LiveComponent\Controller\BatchActionController::invoke iterates over the client-supplied actions array and issues a full HttpKernel sub-request for each entry; because the array size is never bounded, ...