CVE-2026-71434Network attack vector

Unauthenticated file upload via incomplete frontend form validation

Published Aug 6, 2026 · Updated Aug 6, 2026

Unrestricted file upload in Statamic CMS before 5.74.3 or 6.0.0 through 6.24.1 allows remote attackers to store disallowed files. FrontendFormRequest::extraRules validated only assets with the global AllowedFile rule, omitting files fields and asset-container validation rules. A public frontend form with an assets or files field is required; executable .php and .html uploads remain blocked by the global allowlist.

CVSS severity5.3
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Statamic CMS before 5.74.3 or 6.0.0 through 6.24.1 allows remote attackers to store disallowed files. FrontendFormRequest::extraRules validated only assets with the global AllowedFile rule, omitting files fields and asset-container validation rules. A public frontend form with an assets or files field is required; executable .php and .html uploads remain blocked by the global allowlist.

The record

CVE
CVE-2026-71434
Published
Aug 6, 2026
Updated
Aug 6, 2026
Vendor
Statamic, LLC
Product
Statamic CMS
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 5.74.3
  2. Affected versionversion=>= 6.0.0, < 6.24.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Statamic, LLC · Statamic CMSversion=< 5.74.3; version=>= 6.0.0, < 6.24.2

Published CVSS scores

5.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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