How severe is CVE-2017-9303?

CVE-2017-9303 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2017-9303 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-9303?

CVE-2017-9303 affects Laravel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-9303?

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

When was CVE-2017-9303 published?

CVE-2017-9303 was published on 2017-05-29 and last updated on 2026-06-17.

CVE-2017-9303

CVE-2017-9303 is a medium-severity vulnerability in Laravel with a CVSS 3.x base score of 6.1. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 5.8
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Laravel
Published: 2017-05-29
Last modified: 2026-06-17

Description

Laravel 5.4.x before 5.4.22 does not properly constrain the host portion of a password-reset URL, which makes it easier for remote attackers to conduct phishing attacks by specifying an attacker-controlled host.

Frequently asked questions

What is CVE-2017-9303?: Laravel 5.4.x before 5.4.22 does not properly constrain the host portion of a password-reset URL, which makes it easier for remote attackers to conduct phishing attacks by specifying an attacker-controlled host.
How severe is CVE-2017-9303?: CVE-2017-9303 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2017-9303 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-9303?: CVE-2017-9303 affects Laravel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-9303?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-9303 published?: CVE-2017-9303 was published on 2017-05-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:laravel:laravel:5.4.0:*:*:*:*:*:*:*

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