Temporary Login <= 1.0.0 - Authentication Bypass to Account Takeover
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-288.
Summary
The Temporary Login plugin for WordPress is vulnerable to Authentication Bypass in versions up to and including 1.0.0. This is due to improper input validation in the maybe_login_temporary_user() function, which fails to verify that the 'temp-login-token' GET parameter is a scalar string before processing it. When the parameter is supplied as an array, PHP's empty() check is bypassed and sanitize_key() returns an empty string, which is then passed as the meta_value to get_users(). WordPress ignores an empty meta_value and returns all users matching the meta_key '_temporary_login_token', allowing authentication without a valid token. This makes it possible for unauthenticated attackers to authenticate as any active temporary login user by sending a single crafted GET request.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-7567
- 2026-10-03 Alias added: GHSA-4v98-7r2c-mxg7
- 2026-10-25 EPSS moved to the 95th–99th percentile
References
Other 7
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f97c669b-86c1-4873-a050-76972f494099?source=cve
- https://plugins.trac.wordpress.org/browser/temporary-login/trunk/core/options.php#L157
- https://plugins.trac.wordpress.org/browser/temporary-login/tags/1.0.0/core/options.php#L157
- https://plugins.trac.wordpress.org/browser/temporary-login/trunk/core/admin.php#L135
- https://plugins.trac.wordpress.org/browser/temporary-login/tags/1.0.0/core/admin.php#L135
- https://plugins.trac.wordpress.org/browser/temporary-login/trunk/core/admin.php#L179
- https://plugins.trac.wordpress.org/browser/temporary-login/tags/1.0.0/core/admin.php#L179
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Sources
- CVE-2026-7567 · CVE Program
- CVE-2026-7567 · NVD
- FIRST EPSS
- GHSA-4v98-7r2c-mxg7 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences