How severe is CVE-2021-3129?

CVE-2021-3129 has a CVSS 3.1 base score of 9.8 (CRITICAL). EPSS estimates a 99.9% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2021-3129: Laravel Ignition File Upload

CISA Known Exploited Vulnerabilities

Laravel Ignition File Upload Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2023-09-18

Remediation due

2023-10-09

Ransomware

Known use

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

CISA notes
https://github.com/facade/ignition/releases/tag/2.5.2; https://nvd.nist.gov/vuln/detail/CVE-2021-3129

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.

Severity

CVSS 3.1 · CISA9.8 CRITICAL

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

SSVC · CISA-ADP

Exploitationactive

Automatableyes

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
-	-	n/a

References

4 Links

Other references

Record Details

Published

2021-01-12

Last updated

2025-10-21

Assigner (CNA)

mitre

Credited to

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.