How severe is CVE-2022-40482?

CVE-2022-40482 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2022-40482 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-40482?

CVE-2022-40482 affects Laravel Framework. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-40482?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-40482 published?

CVE-2022-40482 was published on 2023-04-25 and last updated on 2026-06-17.

CVE-2022-40482

CVE-2022-40482 is a medium-severity vulnerability in Laravel Framework with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-203.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-203
Affected product: Laravel Framework
Published: 2023-04-25
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2022-40482?: 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.
How severe is CVE-2022-40482?: CVE-2022-40482 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2022-40482 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-40482?: CVE-2022-40482 affects Laravel Framework. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-40482?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-40482 published?: CVE-2022-40482 was published on 2023-04-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:laravel:framework:*:*:*:*:*:*:*:*

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