dbcve.org
Missing AuthorizationWeakness · CWE-862

CVE-2026-31266

HIGH · 7.3 CVSS v3.1 Published 2026-05-27
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
82/100
Remediation priority · High
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Craft CMS 5.9.5 and earlier contains a Missing Authorization vulnerability in the migrate endpoint (/actions/app/migrate).

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Craft CMS 5.9.5 and earlier has a missing authorization check on the /actions/app/migrate endpoint, allowing unauthorized users to potentially execute database migrations without proper authentication or permission validation.

MitigationApply any available vendor patch for Craft CMS. Until then, restrict access to the migrate endpoint at the web server level (e.g., IP allowlisting, HTTP Basic Auth) or ensure the application is not deployed in a configuration that exposes admin actions to unauthenticated users.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check installed Craft CMS version
    Locate the Craft CMS version in the composer.json file, admin panel, or version file and compare it to 5.9.5
    Affected if The installed version is 5.9.5 or earlier
  2. Verify /actions/app/migrate endpoint accessibility
    Attempt a request to the /actions/app/migrate endpoint from an unauthenticated context or inspect web server routing configuration to confirm the endpoint is reachable
    Affected if The endpoint responds without requiring authentication or valid session credentials
  3. Confirm admin action authentication settings
    Review Craft CMS config/settings for any misconfiguration that disables authentication requirements for admin actions
    Affected if Admin actions are configured to allow unauthenticated access or the application lacks proper authentication enforcement

A user is affected if their Craft CMS installation is version 5.9.5 or earlier AND the /actions/app/migrate endpoint is accessible without authentication.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply any available vendor patch for Craft CMS. Until then, restrict access to the migrate endpoint at the web server level (e.g., IP allowlisting, HTTP Basic Auth) or ensure the application is not deployed in a configuration that exposes admin actions to unauthenticated users.

Have this fixed Scoped from the published advisory
  • Consultation4.0 h
  • Implementation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
15.0 hours of engineering $2,690
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,304.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-31266 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data