Groundhogg <= 4.9 - Authenticated (Sales Person+) Privilege Escalation via Contact Identity Rebinding leading to Administrator Account Takeover to 'user_id' Parameter (v3 /contacts) chained with v4 /emails/test

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-97644 · Microsoft / collected KEV context

cve-program · CVE-2026-97644

• https://www.wordfence.com/threat-intel/vulnerabilities/id/557306b7-7b66-465e-8d4d-ebae5b1577c9?source=cve
• https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/api/v3/contacts-api.php#L373
• https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/db/contacts.php#L205
• https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/api/v4/emails-api.php#L571
• https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/includes/replacements.php#L2280
• https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/includes/rewrites.php#L460
• https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/includes/main-roles.php#L532
• https://plugins.trac.wordpress.org/changeset?reponame=&new=3724910%40groundhogg%2Ftags%2F4.9.1&old=3724058%40groundhogg%2Ftags%2F4.9
• https://plugins.trac.wordpress.org/changeset/3724910/groundhogg/trunk/api/v3/contacts-api.php

No related operational record is retained in the current change model.