CVE-2026-64665: CWE-287: Improper Authentication in statamic cms
Statamic CMS versions prior to 5.74.1 and 6.24.0 contain an improper authentication vulnerability when OAuth login is enabled with providers that do not guarantee verified email addresses. This flaw allows an unauthenticated attacker to sign in as an existing user, including potentially a super admin, without knowing the user's password. The vulnerability arises because the application matches OAuth identities to user accounts solely by email address. This issue is fixed in versions 5.74.1 and 6.24.0.
AI Analysis
Technical Summary
CVE-2026-64665 is an improper authentication vulnerability (CWE-287) in Statamic CMS, affecting versions before 5.74.1 and 6.24.0. When OAuth login is enabled with a provider that does not verify email addresses, the system matches OAuth identities to existing accounts by email alone. This allows an unauthenticated attacker to impersonate any user, including super admins, without password knowledge. Exploitation requires explicit OAuth enablement with such a provider. The vulnerability is addressed in Statamic CMS versions 5.74.1 and 6.24.0.
Potential Impact
Successful exploitation allows an unauthenticated attacker to gain unauthorized access to any user account, including those with super admin privileges, leading to full compromise of the affected CMS instance. This results in complete confidentiality, integrity, and availability loss as indicated by the CVSS score of 8.1 (high severity).
Mitigation Recommendations
Upgrade Statamic CMS to version 5.74.1 or later, or 6.24.0 or later, where this vulnerability is fixed. Ensure OAuth login is only enabled with providers that guarantee verified email addresses. No other mitigations are specified.
CVE-2026-64665: CWE-287: Improper Authentication in statamic cms
Description
Statamic CMS versions prior to 5.74.1 and 6.24.0 contain an improper authentication vulnerability when OAuth login is enabled with providers that do not guarantee verified email addresses. This flaw allows an unauthenticated attacker to sign in as an existing user, including potentially a super admin, without knowing the user's password. The vulnerability arises because the application matches OAuth identities to user accounts solely by email address. This issue is fixed in versions 5.74.1 and 6.24.0.
CVSS v3.1
Score 8.1high
Affected software
statamic
cms
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-64665 is an improper authentication vulnerability (CWE-287) in Statamic CMS, affecting versions before 5.74.1 and 6.24.0. When OAuth login is enabled with a provider that does not verify email addresses, the system matches OAuth identities to existing accounts by email alone. This allows an unauthenticated attacker to impersonate any user, including super admins, without password knowledge. Exploitation requires explicit OAuth enablement with such a provider. The vulnerability is addressed in Statamic CMS versions 5.74.1 and 6.24.0.
Potential Impact
Successful exploitation allows an unauthenticated attacker to gain unauthorized access to any user account, including those with super admin privileges, leading to full compromise of the affected CMS instance. This results in complete confidentiality, integrity, and availability loss as indicated by the CVSS score of 8.1 (high severity).
Mitigation Recommendations
Upgrade Statamic CMS to version 5.74.1 or later, or 6.24.0 or later, where this vulnerability is fixed. Ensure OAuth login is only enabled with providers that guarantee verified email addresses. No other mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-20T17:11:30.897Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a750707bf8831d5395f5adc
Added to database: 08/06/2026, 22:13:27 UTC
Last enriched: 08/14/2026, 16:06:58 UTC
Last updated: 09/21/2026, 22:01:36 UTC
Views: 30
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