Laravel Ignition File Upload Vulnerability

Exploited · KEV 2023-09-18RansomwareMetasploit moduleCVE-2021-3129

Exploited since 2023-09-18. No WAF vendor names it yet. Our CRS test: partly blocked.

Edge rules

0/8

Our test

Partly blocked

CVSS

9.8

EPSS

99.9% Top 0.1%

Posts, 14d

Published

2021-01-12

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… More

Edge coverage

Claimed by vendors

CloudflareBefore feed historyOlder than its feedWe measured: passed AWSNo public claimNot namedWe measured: partly Microsoft AzureNo public claimNot named Google CloudBefore feed historyOlder than its feedWe measured: partly FastlyBefore feed historyOlder than its feed F5Before feed historyOlder than its feed AkamaiNo public sourceNo public changelog OWASP CRSBefore feed historyOlder than its feed

Ask Vigil

AI · answers from this page

Ask about CVE-2021-3129: who's covered, what to patch first, how vendors compare. I cite sources and won't help with attacks.

Workers AI (Llama 3.3). Can be wrong: check the cited source.

Severity, decoded

CVSS 3.1

9.8Critical

Critical · 9.8 / 10

Exploitable over the network, with no privileges and no user interaction, leading to full loss of confidentiality, integrity and availability.

Over the internetNo login neededNo user actionWorks reliablyFull compromise

How the score is built8 metrics

Attack vectorAn attacker can reach it over the internet; no access to your network needed.
Network
Attack complexityNo special conditions are needed; the attack works reliably.
Low
Privileges requiredNo account or login is needed.
None
User interactionNo one has to click or open anything; the attack works on its own.
None
ScopeThe damage stays within the vulnerable component.
Unchanged
Confidentiality impactAn attacker can read all data the affected component holds, or the most sensitive parts of it.
High
Integrity impactAn attacker can change any data or files the affected component protects.
High
Availability impactAn attacker can take the component down completely or keep it from serving anyone.
High

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

CISA's assessmentSSVC, from the CVE record

ExploitationActive

Attackers are exploiting this in the wild.

AutomatableYes

Attackers can script the attack end to end and hit many targets at once.

Technical impactTotal

A successful attack gives full control over the affected software or all of its data.

Public exploits

3 found

1 Metasploit1 Exploit-DB1 Scanner template0 GitHub PoCs

MetasploitUnauthenticated remote code execution in Ignition2021-01-13 · exploit · rank Excellent · has check
Exploit-DBLaravel 8.4.2 debug mode - Remote code execution2021-01-14 · webapps · php
NucleiCVE-2021-3129.yamldetection template, replayed in our lab

Links are to third-party code: never run it outside an isolated lab.

Timeline

2021-01-12
CVE published
CVE List
2021-01-13
Metasploit module published
Unauthenticated remote code execution in Ignition
2021-01-14
Exploit published on Exploit-DB
Laravel 8.4.2 debug mode - Remote code execution
2023-09-18
Added to CISA KEV
Confirmed exploitation in the wild
2026-11-02
Our test: OWASP Core Rule Set blocked part of it
paranoia level 1, anomaly threshold 5, default CRS settings
2026-11-02
Our test: OWASP Core Rule Set blocked it
paranoia level 2, anomaly threshold 5, default CRS settings