{"id":"GHSA-mhf7-xp6r-6qrc","title":"Livewire: Authorization bypass in #[Authorize] via reordered parameter keys and #[Json] execution order","summary":"Livewire: Authorization bypass in #[Authorize] via reordered parameter keys and #[Json] execution order","severity":"medium","cvss":6.5,"cwe":["CWE-863"],"vendor":"livewire","product":"livewire/livewire","ecosystem":"composer","affected":["livewire/livewire >= 4.3.0, < 4.4.8"],"patched":["livewire/livewire 4.4.8"],"published":"2026-10-23","updated":"2026-10-23","sourceUpdated":"2026-10-23T20:51:30Z","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-mhf7-xp6r-6qrc","references":[{"url":"https://github.com/livewire/livewire/security/advisories/GHSA-mhf7-xp6r-6qrc"},{"url":"https://github.com/livewire/livewire/commit/822a4fa9b1e1123691133a2e2eb379a3dab11191"},{"url":"https://github.com/livewire/livewire/releases/tag/v4.4.8"},{"url":"https://github.com/advisories/GHSA-mhf7-xp6r-6qrc"}],"tags":["ghsa","composer"],"ingestedAt":"2026-10-23T21:38:13.040Z","slug":"GHSA-mhf7-xp6r-6qrc","body":"## Overview\n\n### Impact\n\nThree issues allowed actions protected by the `#[Authorize]` attribute to run against records the current user is not authorized for:\n\n1. **Out-of-order parameter keys on actions.** `#[Authorize]` resolved a model parameter by its array key, while the action itself received parameters positionally. A request sending params as an object with reordered integer keys (e.g. `{\"1\": 2, \"0\": 1}`) could pass authorization with a record the user owns while the action received a different record. With `#[Authorize('delete', 'comment')]` on `deleteComment(Comment $comment)`, a user could delete another user's comment.\n2. **The same issue on event listeners.** Methods using both `#[On]` and `#[Authorize]` with a model parameter were affected in the same way through the `__dispatch` call.\n3. **`#[Json]` methods ran before authorization.** When a method had both `#[Json]` and `#[Authorize]`, the method body executed before the authorization check. The response was still a 403, but any side effects (such as database writes) had already happened.\n\nOnly applications using the `#[Authorize]` attribute are affected: on methods that take model parameters (issues 1 and 2), or on `#[Json]` methods (issue 3). Authorization performed inside the method (e.g. `$this->authorize(...)`) is not affected. Livewire 3.x is not affected.\n\n### Patches\n\nFixed in **v4.4.8**. Call and event parameters must now be a list or use named (string) keys, otherwise the request is rejected, and `#[Json]` methods are authorized before they run.\n\n### Workarounds\n\nUpgrade to v4.4.8. If you can't upgrade right away, call `$this->authorize(...)` inside affected methods instead of relying on the `#[Authorize]` attribute.\n\n### Credits\n\nReported by Yousef Aman ([@yousef-aman](https://github.com/yousef-aman)).\n\n## Affected packages\n\n- `livewire/livewire >= 4.3.0, < 4.4.8`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `livewire/livewire 4.4.8`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}