Information disclosure in Laravel

CVE-2017-16894

In Laravel framework through 5.5.21, remote attackers can obtain sensitive information (such as externally usable passwords) via a direct request for the /.env URI. NOTE: this CVE is only about Laravel framework's writeNewEnvironmentFileWith function in src/Illuminate/Foundation/Console/KeyGenerateCommand.php, which uses file_put_contents without restricting the .env permissions. The .env filename is not used exclusively by Laravel framework.

Vulnerability class: Information Disclosure

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.869 (99.7th percentile), scored .

High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2017-16894: held from 0.869 to 0.869.

EPSS over last 30 days · oldest: 0.869 · newest: 0.869 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2017-16894?
CVE-2017-16894 is a high-severity vulnerability in Laravel, classified under Information Disclosure. CVSS score: 7.5/10. Published 2017-11-20.
How severe is CVE-2017-16894?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2017-16894 known to be exploited?
23 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.