CVE-2026-64665: Statamic Account Takeover Vulnerability

HIGH
Advisory Identifier: GHSA-93qh-5269-9wcf
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CVSS 8.1
CWE-287 CWE-290
Published
Advisory Summary

CVE-2026-64665 is a HIGH (CVSS 8.1) account takeover vulnerability (CWE-287: Improper Authentication) affecting Statamic libraries in the Packagist ecosystem. The issue involves account takeover via oauth email matching without email-verification check. Remediation is available by upgrading affected packages to version 5.74.1, 6.24.0.

CVE-2026-64665 at a Glance

CVE Identifier CVE-2026-64665
GHSA Identifier GHSA-93qh-5269-9wcf
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-287: Improper Authentication
Affected Product Statamic
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 8.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-64665

To remediate this vulnerability, upgrade all affected Statamic dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

statamic/cms fixed: 5.74.1 
Upgrade statamic/cms to 5.74.1
statamic/cms fixed: 6.24.0 
Upgrade statamic/cms to 6.24.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for statamic/cms

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-64665, inspect your project dependencies for Statamic:

inspect dependencies for statamic/cms

Analyze the terminal output to locate any version of Statamic in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.74.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-287: Improper Authentication, where when an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. In Statamic, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact When OAuth login is enabled with a provider that does not guarantee verified email addresses, an unauthenticated attacker could sign in as an existing user — potentially including a super admin — without their password. Exploitation requires OAuth to be explicitly enabled with such a provider. ### Patches Fixed in 5.74.1 and 6.24.0. ### Workarounds Only enable OAuth with providers that guarantee verified email addresses, or disable OAuth login.

CVE-2026-64665 Affected Statamic Versions

2 component(s)
Fixed Versions:
5.74.16.24.0
Product / Package Ecosystem Affected Versions Fixed Version
statamic/cms
 Packagist
< 5.74.1
5.74.1
statamic/cms
 Packagist
≥ 6.0.0
< 6.24.0
6.24.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/statamic/cms/security/advisories/GHSA-93qh-5269-9wcf
Statamic Source Repository REPOSITORY
https://github.com/statamic/cms/pull/14887
Security Fix Commit FIX COMMIT
https://github.com/statamic/cms/commit/e59dd342c83bc45de26573cfb0536a0bca98255a
Statamic Source Repository REPOSITORY
https://github.com/statamic/cms
Statamic Release RELEASE
https://github.com/statamic/cms/releases/tag/v5.74.1
Statamic Release RELEASE
https://github.com/statamic/cms/releases/tag/v6.24.0

Frequently Asked Questions

What is CVE-2026-64665?
CVE-2026-64665 is a security vulnerability in Statamic involving Account takeover via OAuth email matching without email-verification check under CWE-287: Improper Authentication.
Which Statamic versions are affected?
Affected versions include releases prior to 5.74.1, 6.24.0 across affected packages: statamic/cms.
What version fixes CVE-2026-64665?
Upgrading to 5.74.1, 6.24.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is statamic/cms affected?
Yes, statamic/cms is affected in releases prior to 5.74.1, 6.24.0. Upgrade your dependency to 5.74.1, 6.24.0 or later.
What is the CVSS score of CVE-2026-64665?
CVE-2026-64665 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-64665?
CVE-2026-64665 is classified under CWE-287: Improper Authentication (When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.).
How can I check Packagist dependencies for CVE-2026-64665?
Run the dependency tree command: 'inspect dependencies for statamic/cms'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-93qh-5269-9wcf",
  "modified" : "2026-08-06T19:25:05Z",
  "published" : "2026-08-06T19:25:05Z",
  "aliases" : [ "CVE-2026-64665" ],
  "summary" : "Statamic: Account takeover via OAuth email matching without email-verification check",
  "details" : "### Impact\n\nWhen OAuth login is enabled with a provider that does not guarantee verified email addresses, an unauthenticated attacker could sign in as an existing user — potentially including a super admin — without their password. Exploitation requires OAuth to be explicitly enabled with such a provider.\n\n### Patches\n\nFixed in 5.74.1 and 6.24.0.\n\n### Workarounds\n\nOnly enable OAuth with providers that guarantee verified email addresses, or disable OAuth login.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "statamic/cms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.74.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "statamic/cms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.0.0"
      }, {
        "fixed" : "6.24.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/statamic/cms/security/advisories/GHSA-93qh-5269-9wcf"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/statamic/cms/pull/14887"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/statamic/cms/commit/e59dd342c83bc45de26573cfb0536a0bca98255a"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/statamic/cms"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/statamic/cms/releases/tag/v5.74.1"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/statamic/cms/releases/tag/v6.24.0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-287", "CWE-290" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-06T19:25:05Z",
    "nvd_published_at" : null
  }
}