Vulnerability-Lookup

CVE-2026-9273 (GCVE-0-2026-9273)

Vulnerability from cvelistv5 – Published: 2026-08-05 04:25 – Updated: 2026-08-05 14:13

Title

Membership Plugin – Kadence Memberships <= 4.0.0 - Unauthenticated Password Reset Link Poisoning to Account Takeover

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.

Severity

9.3 (Critical)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-640 - Weak Password Recovery Mechanism for Forgotten Password

Assigner

Wordfence

References

7 references

URL	Tags
https://www.wordfence.com/threat-intel/vulnerabil…
https://plugins.trac.wordpress.org/browser/restri…
https://plugins.trac.wordpress.org/browser/restri…
https://plugins.trac.wordpress.org/browser/restri…
https://plugins.trac.wordpress.org/browser/restri…
https://plugins.trac.wordpress.org/browser/restri…
https://plugins.trac.wordpress.org/changeset?new=…

Impacted products

1 product

Vendor	Product	Version
stellarwp	Membership Plugin – Kadence Memberships	Affected: 0 , ≤ 4.0.0 (semver)

Credits

scort

Show details on NVD website

JSON

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GHSA-J7VX-FW83-2V34

Vulnerability from github – Published: 2026-08-05 06:30 – Updated: 2026-08-05 06:30

Details

Severity

9.3 (Critical)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-9273"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-640"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-05T06:16:40Z",
    "severity": "CRITICAL"
  },
  "details": "The Membership Plugin \u2013 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[\u0027rc_redirect\u0027] ) . ... ) at line 243, and add_query_arg( array( \u0027key\u0027 =\u003e $key, \u0027login\u0027 =\u003e ... ), $_POST[\u0027rc_redirect\u0027] ) 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.",
  "id": "GHSA-j7vx-fw83-2v34",
  "modified": "2026-08-05T06:30:33Z",
  "published": "2026-08-05T06:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9273"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/restrict-content/tags/4.0.0/legacy/includes/forms.php#L207"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/restrict-content/tags/4.0.0/legacy/includes/forms.php#L243"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/restrict-content/tags/4.0.0/legacy/includes/forms.php#L306"
    },
    {
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      "url": "https://plugins.trac.wordpress.org/browser/restrict-content/trunk/legacy/includes/forms.php#L243"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/restrict-content/trunk/legacy/includes/forms.php#L306"
    },
    {
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      "url": "https://plugins.trac.wordpress.org/changeset?new=3549742%40restrict-content%2Ftags%2F4.0.1\u0026old=3529319%40restrict-content%2Ftags%2F4.0.0"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/ca38c423-2df8-4f20-bd95-2ecd84167a7f?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-9273 (GCVE-0-2026-9273)

GHSA-J7VX-FW83-2V34

Tags

Sightings

Nomenclature