CVE-2026-7567

Description

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.

CVSS v3.1 Score

9.8

CRITICAL

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

EPSS — Exploit Prediction

0.0547

Probability of exploitation

0.90%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-288 CWE-288

References

Other References

https://plugins.trac.wordpress.org/browser/temporary-login/tags/1.0.0/core/admin.php#L135 https://plugins.trac.wordpress.org/browser/temporary-login/tags/1.0.0/core/admin.php#L179 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/trunk/core/admin.php#L179 https://plugins.trac.wordpress.org/browser/temporary-login/trunk/core/options.php#L157 https://www.wordfence.com/threat-intel/vulnerabilities/id/f97c669b-86c1-4873-a050-76972f494099?source=cve

Frequently Asked Questions

What is CVE-2026-7567? +

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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-7567? +

CVE-2026-7567 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0547, placing it in the 1th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-7567? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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