CVE-2021-3129

Name: CVE-2021-3129
Creator: NVD / NIST
Published: 2021-01-12T15:15:16.453+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 99.94%

Last modified Jun 17, 2026

CVE-2021-3129 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 99.94% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

99.94%

100.0th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Oct 9, 2023.

Affected Software

Vendor	Product	Versions
Facade	Ignition	< 2.5.2

References

http://packetstormsecurity.com/files/162094/Ignition-2.5.1-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/165999/Ignition-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://github.com/facade/ignition/pull/334Patch, Third Party Advisory
https://www.ambionics.io/blog/laravel-debug-rceExploit, Third Party Advisory
http://packetstormsecurity.com/files/162094/Ignition-2.5.1-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/165999/Ignition-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://github.com/facade/ignition/pull/334Patch, Third Party Advisory
https://www.ambionics.io/blog/laravel-debug-rceExploit, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3129US Government Resource

Timeline

Published: Jan 12, 2021
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2021-3129?

How severe is CVE-2021-3129?

CVE-2021-3129 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 99.94% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2021-3129?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-3129?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST