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Medium, CVSS 6.5amended

Livewire: Authorization bypass in #[Authorize] via reordered parameter keys and #[Json] execution order

GHSA-mhf7-xp6r-6qrc

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (livewire/livewire 4.4.8), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
6.5 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
EPSS
No dated EPSS signal available.
Source description

As published by the source; long descriptions are shortened.

Impact 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…

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 3 · amended ·

    Amended from ghsa record GHSA-mhf7-xp6r-6qrc

  2. Revision 2 · amended ·

    Amended from ghsa record GHSA-mhf7-xp6r-6qrc

  3. Revision 1 · created ·

    Published from osv record GHSA-mhf7-xp6r-6qrc

Agent brief

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# Patch Next advisory brief: GHSA-mhf7-xp6r-6qrc

Advisory: Livewire: Authorization bypass in #[Authorize] via reordered parameter keys and #[Json] execution order
IDs: GHSA-mhf7-xp6r-6qrc
Record: https://patchnext.com/advisories/ghsa-mhf7-xp6r-6qrc (revision 3, source checked 26 Oct 2026, 14:53 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: livewire/livewire 4.4.8. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist livewire/livewire: affected >= 4.3.0, < 4.4.8; fixed in 4.4.8

## Suggested inspection (read-only)
- Packagist livewire/livewire: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on livewire/livewire.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-mhf7-xp6r-6qrc (OSV record GHSA-mhf7-xp6r-6qrc lists affected ranges: Packagist livewire/livewire >=4.3.0 <4.4.8 (fixed))
- Verified: https://github.com/advisories/GHSA-mhf7-xp6r-6qrc (GitHub-reviewed advisory GHSA-mhf7-xp6r-6qrc lists affected ranges: Packagist livewire/livewire >=4.3.0 <4.4.8)

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