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GHSA-mhf7-xp6r-6qrc: Livewire: Authorization bypass in #[Authorize] via reordered parameter keys and #[Json] execution order

October 23, 2026

Three issues allowed actions protected by the #[Authorize] attribute to run against records the current user is not authorized for:

  1. 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.
  2. 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.
  3. #[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.

Only 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.

References

  • github.com/advisories/GHSA-mhf7-xp6r-6qrc
  • github.com/livewire/livewire/commit/822a4fa9b1e1123691133a2e2eb379a3dab11191
  • github.com/livewire/livewire/releases/tag/v4.4.8
  • github.com/livewire/livewire/security/advisories/GHSA-mhf7-xp6r-6qrc

Code Behaviors & Features

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Affected versions

All versions starting from 4.3.0 before 4.4.8

Fixed versions

  • 4.4.8

Solution

Upgrade to version 4.4.8 or above.

Impact 6.5 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Learn more about CVSS

Weakness

  • CWE-863: Incorrect Authorization

Source file

packagist/livewire/livewire/GHSA-mhf7-xp6r-6qrc.yml

Spotted a mistake? Edit the file on GitLab.

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