CVE-2022-40482

Name: CVE-2022-40482
Creator: NVD / NIST
Published: 2023-04-25T19:15:10.18+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.88%

Last modified Jun 17, 2026

CVE-2022-40482 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. The authentication method in Laravel 8.x through 9.x before 9.32.0 was discovered to be vulnerable to user enumeration via timeless timing attacks with HTTP/2 multiplexing. This is caused by the early return inside the hasValidCredentials method in the Illuminate\Auth\SessionGuard class when a user is found to not exist.. EPSS estimates a 0.88% chance of exploitation in the next 30 days.

Description

The authentication method in Laravel 8.x through 9.x before 9.32.0 was discovered to be vulnerable to user enumeration via timeless timing attacks with HTTP/2 multiplexing. This is caused by the early return inside the hasValidCredentials method in the Illuminate\Auth\SessionGuard class when a user is found to not exist.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.88%

54.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Laravel	Framework	>= 8.0.0, < 8.83.24
Laravel	Framework	>= 9.0.0, < 9.32.0

References

https://ephort.dk/blog/laravel-timing-attack-vulnerability/Exploit, Technical Description, Third Party Advisory
https://github.com/ephort/laravel-user-enumeration-demoExploit, Third Party Advisory
https://github.com/laravel/framework/pull/44069Patch, Vendor Advisory
https://github.com/laravel/framework/releases/tag/v9.32.0Release Notes
https://ephort.dk/blog/laravel-timing-attack-vulnerability/Exploit, Technical Description, Third Party Advisory
https://github.com/ephort/laravel-user-enumeration-demoExploit, Third Party Advisory
https://github.com/laravel/framework/pull/44069Patch, Vendor Advisory
https://github.com/laravel/framework/releases/tag/v9.32.0Release Notes

Timeline

Published: Apr 25, 2023
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2022-40482?

How severe is CVE-2022-40482?

CVE-2022-40482 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.88% probability of exploitation in the next 30 days.

How do I fix CVE-2022-40482?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-40482?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST