CVE-2026-9273 json
Membership Plugin – Kadence Memberships <= 4.0.0 - Unauthenticated Password Reset Link Poisoning to Account Takeover
published 2026-08-05 3 mo ago modified 2026-08-12 2 mo ago also EUVD-2026-53042
- cvss
- 9.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 43%
- public exploits
- 0
- none known
Summary
The Membership Plugin – Kadence Memberships plugin for WordPress (formerly Restrict Content) is vulnerable to password reset link poisoning leading to account takeover in all versions up to, and including, 4.0.0. This is due to the legacy lost-password handler rc_process_lost_password_form() consuming the attacker-controlled rc_redirect POST parameter into two unvalidated sinks in legacy/includes/forms.php: wp_redirect( esc_url( $_POST['rc_redirect'] ) . ... ) at line 243, and add_query_arg( array( 'key' => $key, 'login' => ... ), $_POST['rc_redirect'] ) inside rc_send_password_reset_email() at line 306. The nonce required to reach the handler is broadcast by the public [login_form] shortcode at line 207 to any anonymous visitor. This makes it possible for unauthenticated attackers to issue a password-reset request for any account (including administrators) whose reset email body points the victim at an attacker-controlled host carrying a valid reset key/login. When the victim clicks the link, the reset key leaks to the attacker, who can replay it against the legitimate site to complete account takeover.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 3 mo ago
Exploit prediction
0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N |
Affected products
- stellarwp Membership Plugin – Kadence Memberships
Classification
- Weakness
-
- CWE-640 Weak Password Recovery Mechanism for Forgotten Password
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/ca38c423-2df8-4f20-bd95-2ecd84167a7f?source=cve
- plugins.trac.wordpress.org /browser/restrict-content/tags/4.0.0/legacy/includes/forms.php#L243
- plugins.trac.wordpress.org /browser/restrict-content/tags/4.0.0/legacy/includes/forms.php#L306
- plugins.trac.wordpress.org /browser/restrict-content/tags/4.0.0/legacy/includes/forms.php#L207
- plugins.trac.wordpress.org /browser/restrict-content/trunk/legacy/includes/forms.php#L243
- plugins.trac.wordpress.org /browser/restrict-content/trunk/legacy/includes/forms.php#L306
- plugins.trac.wordpress.org /changeset?new=3549742%40restrict-content%2Ftags%2F4.0.1&old=3529319%40restrict-content%2Ftags%2F4.0.0
Sources
- CVE List CVE-2026-9273
- NVD CVE-2026-9273
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.