CVE-2021-3129

CRITICAL
9.8
CVSS Score
Published: January 12, 2021 at 02:07 PM UTC
Updated: June 17, 2026 at 04:04 AM UTC
1 product affected across 1 vendorIgnition· also runs on 1 platform

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Severity
CRITICAL9.8
Exploitation
CISA KEV
Exploit prediction
EPSS 100%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score99.9%

EPSS (Exploit Prediction Scoring System) estimates a 99.9% chance this CVE is exploited in the wild within the next 30 days — higher than 100% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

Laravel Ignition contains a file upload vulnerability that allows unauthenticated remote attackers to execute malicious code due to insecure usage of file_get_contents() and file_put_contents().

Required Action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Ransomware Use
Known
Added to KEV
Sep 18, 2023
Remediation Due
Oct 9, 2023
1113 days overdue

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.5.2
Affected range stops below 2.5.2, so it looks safe — our inference, not a vendor statement
laravel-laravel (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (5)

x_refsource_MISCPatchThird Party Advisory
https://github.com/facade/ignition/pull/334
x_refsource_MISCExploitThird Party Advisory
https://www.ambionics.io/blog/laravel-debug-rce
US Government Resource
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3129

SSVC — Action Prioritization

SSVCActiveAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.8CRITICALCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
NVD-CWE-noinfo

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