CVE-2017-9303

Laravel does not properly constrain the host portion of a password-reset URL

6.1 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

0.96%Up 0.2 points since Apr 14, 2021

What each source reports

NVD Score used 6.1

Record: CVE-2017-9303
CVSS 3.0: 6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0: 5.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:N
Weakness: CWE-20
Updated: 2026-11-02

CVE List No score

Record: CVE-2017-9303
Updated: 2026-11-02

EUVDEUVD-2022-5147 No score

Record: EUVD-2022-5147
Updated: 2026-11-03

GitHub AdvisoriesGHSA-rc8x-jrrc-frfv 6.1

Laravel does not properly constrain the host portion of a password-reset URL

Record: GHSA-rc8x-jrrc-frfv
CVSS 3.0: 6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-20
Updated: 2026-11-02

OSV 6.1

Record: CVE-2017-9303
CVSS 3.0: 6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

OSVGHSA-rc8x-jrrc-frfv 6.1

Laravel does not properly constrain the host portion of a password-reset URL

Record: GHSA-rc8x-jrrc-frfv
CVSS 3.0: 6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-20
Updated: 2026-11-02

Affected products

laravel

Affected packages

Affected packages
Package	Affected	Fixed
`laravel/laravel` Packagist	5.4.0 up to 5.4.22	5.4.22
`illuminate/auth` Packagist	5.3.0 to 5.3.31	None known
`illuminate/auth` Packagist	5.4.0 up to 5.4.22	5.4.22
`laravel/framework` Packagist	5.3.0 to 5.3.31	None known
`laravel/framework` Packagist	5.4.0 up to 5.4.22	5.4.22
`laravel/laravel` Packagist	5.4.0 up to 5.4.22, plus listed versions v5.4.0v5.4.15v5.4.16v5.4.19v5.4.21v5.4.3v5.4.9	5.4.22
`illuminate/auth` Packagist	5.3.0 to 5.3.31, plus listed versions v5.3.0v5.3.16v5.3.23v5.3.4	None known
`illuminate/auth` Packagist	5.4.0 up to 5.4.22, plus listed versions v5.4.0v5.4.13v5.4.17v5.4.19v5.4.9	5.4.22
`laravel/framework` Packagist	5.3.0 to 5.3.31, plus listed versions v5.3.0v5.3.1v5.3.10v5.3.11v5.3.12 Show 27 moreShow less v5.3.13v5.3.14v5.3.15v5.3.16v5.3.17v5.3.18v5.3.19v5.3.2v5.3.20v5.3.21v5.3.22v5.3.23v5.3.24v5.3.25v5.3.26v5.3.27v5.3.28v5.3.29v5.3.3v5.3.30v5.3.31v5.3.4v5.3.5v5.3.6v5.3.7v5.3.8v5.3.9	None known
`laravel/framework` Packagist	5.4.0 up to 5.4.22, plus listed versions v5.4.0v5.4.1v5.4.10v5.4.11v5.4.12 Show 17 moreShow less v5.4.13v5.4.14v5.4.15v5.4.16v5.4.17v5.4.18v5.4.19v5.4.2v5.4.20v5.4.21v5.4.3v5.4.4v5.4.5v5.4.6v5.4.7v5.4.8v5.4.9	5.4.22

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2017-9303 is a medium vulnerability (CVSS 6.1) in Laravel, published May 29, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.96%, the 61st percentile. Fixed in laravel/laravel 5.4.22.