Laravel Encrypter Component Potential Decryption Failure Leading to Unintended Behavior
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub.
Summary
The Laravel Encrypter component is susceptible to a vulnerability that may result in decryption failure, leading to an unexpected return of `false`. Exploiting this issue requires the attacker to manipulate the encrypted payload before decryption. When combined with weak type comparisons in the application's code, such as the example below: ``` <?php $decyptedValue = decrypt($secret); if ($decryptedValue == '') { // Code is run even though decrypted value is false... } ```
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | laravel/framework (Packagist) | before 5.5.40 | 5.5.40 | Patch available | GHSA-7852-w36x-6mf6 |
| — | laravel/framework (Packagist) | 5.6.0 to before 5.6.15 | 5.6.15 | Patch available | GHSA-7852-w36x-6mf6 |
- laravel/framework (Packagist) Vendor— Affected before 5.5.40 Fixed in 5.5.40 Patch available GHSA-7852-w36x-6mf6
- laravel/framework (Packagist) Vendor— Affected 5.6.0 to before 5.6.15 Fixed in 5.6.15 Patch available GHSA-7852-w36x-6mf6
Remediation
- Fix · GHSA-7852-w36x-6mf6 laravel/framework (Packagist) Fixed in 5.5.40 Advisory →
- Fix · GHSA-7852-w36x-6mf6 laravel/framework (Packagist) Fixed in 5.6.15 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-7852-w36x-6mf6
References
Other 5
- https://github.com/laravel/framework/commit/28e53f23a76206fb130e9a54eb95aa3f010e79c9
- https://github.com/laravel/framework/commit/886d261df0854426b4662b7ed5db6a1c575a4279
- https://github.com/FriendsOfPHP/security-advisories/blob/master/laravel/framework/2018-03-30-1.yaml
- https://github.com/laravel/framework
- https://medium.com/@taylorotwell/laravel-security-release-5-6-15-and-5-5-40-56f1257933a0
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences