CVE-2021-3129

CRITICAL9.8

CISA KEV

Published 2021-01-12 · Updated 2026-06-17 · Source cve@mitre.org

Summary

CVE-2021-3129 is a critical-severity (CVSS 9.8) vulnerability in Laravel Ignition. CISA added it to the Known Exploited Vulnerabilities catalog on September 18, 2023, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by October 9, 2023. CISA also lists it as known to be used in ransomware campaigns, so it should be prioritised accordingly. Laravel has 3 vulnerabilities in the KEV catalog, 1 of them linked to ransomware.

All 3 known-exploited Laravel vulnerabilities →

Description

Ignition before 2.5.2, as used in Laravel and other products, allows unauthenticated remote attackers to execute arbitrary code because of insecure usage of file_get_contents() and file_put_contents(). This is exploitable on sites using debug mode with Laravel before 8.4.2.

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

CISA Known-Exploited Vulnerability

Product: Laravel — Ignition

Name: Laravel Ignition File Upload Vulnerability

Date added: 2023-09-18 · Due: 2023-10-09

USED IN RANSOMWARE

Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

References

View on NVD

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