Is CVE-2021-3129 in the CISA KEV catalog?

Yes. CVE-2021-3129 is on the CISA Known Exploited Vulnerabilities list, added 2023-09-18, and has known ransomware campaign use.

What is the CVSS severity of CVE-2021-3129?

CVE-2021-3129 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2021-3129?

CVE-2021-3129 has an EPSS score of 99.94% (100th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2021-3129

CRITICALCISA KEVEPSS 100th pctl

9.8

CVSS v3

NVD

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.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

99.94%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Laravel Ignition File Upload Vulnerability

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().

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

Remediation due: 2023-10-09

Associated with ransomware campaigns

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-10.