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-2026-49212

The vulnerability CVE-2026-49212 affects Symfony UX LiveComponentHydrator: the HMAC checksum previously covered only sorted prop key/value pairs and did not bind the component name, slot (props vs propsFromParent), or request context. This allowed a signed blob created for one component/slot to b...

CVE-2026-49215

Symphony UX LiveComponent is affected: from version 2.22.0 through 2.36.0 and in 3.1.0, the isLiveComponentRequest() gate relied on Accept: application/vnd.live-component+html, which is CORS-safelisted. Cross-origin fetch() can set this header without a preflight, allowing forged cross-origin #[L...

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-2026-49208

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-2026-49210

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-2026-49209

The CVE-2026-49209 issue affects Symfony UX LiveComponent’s BatchActionController::__invoke(), which iterates over client-supplied actions and issues a full HttpKernel sub-request per entry. With unbounded action arrays, an authenticated attacker can submit a single _batch request containing thou...