CVE-2021-3129
Laravel Ignition File Upload Vulnerability
- Critical 9.8
- Exploited: added to CISA KEV 18 Sep 2023
- Used in ransomware campaigns
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.
Key facts
- Published
- 12 Jan 2021
- Last changed
- 21 Oct 2025
- Assigned by
- mitre
- KEV added
- 18 Sep 2023
- KEV fix due
- 9 Oct 2023
- Used in ransomware
- Yes, according to CISA
- EPSS
- 99.943% likely to be exploited in the next 30 days, higher than 99.973% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: yes; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 9.8CVSS 3.1, Criticalfrom CISA (ADP container)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
What to do
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a |
|
Timeline
- 12 Jan 2021 Published
- 18 Sep 2023 CVE-2021-3129 added to CISA KEV
- 18 Sep 2023 Added to the CISA KEV catalogue