Omnisend for WooCommerce <= 1.18.0 - Unauthenticated Omnisend Account Takeover via Predictable Connect Token
The Omnisend for WooCommerce plugin for WordPress is vulnerable to an unauthenticated account takeover via insufficiently random values in versions up to, and including, 1.18.0. This is due to the generate_install_url() function deriving the OAuth connect token solely from the Unix timestamp at page-load time (hash('sha256', time())), which yields only ~86,400 distinct values per day and is trivially brute-forceable. This makes it possible for unauthenticated attackers to predict the connect token, authenticate to the POST /wp-json/omnisend-api/v1/connect REST endpoint, and replace the store's omnisend_api_key and brand_id with attacker-supplied values, redirecting all customer PII synchronization, order webhooks, and marketing communications to the attacker's Omnisend account.
Betroffene Software
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| Plattform | Paket | Anfällige Versionen | Behoben in |
|---|---|---|---|
| WordPress-Plugin | Email Marketing for WooCommerce by Omnisend | <= 1.18.0 | 1.18.1 |
Verweise
- CVSS-Vektor
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N- Schwäche (CWE)
CWE-330- Plattform
- WordPress
- Paket
Email Marketing for WooCommerce by Omnisend- Veröffentlicht
- 13.05.2026
- Aktualisiert
- 11.10.2026 10:22
Quellen und Lizenzen
Wordfence Intelligence - 092061a5-5315-4401-8503-6153f660acdc - Wordfence Intelligence
Copyright 1999-2026 The MITRE Corporation
Copyright 2012-2026 Defiant Inc.
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CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.
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Schwachstellenhistorie: Email Marketing for WooCommerce by Omnisend
Alle veröffentlichten Schwachstellen dieses Pakets (WordPress-Plugin), neueste zuerst. Zeigt, ob es ein einmaliger Ausrutscher ist oder ein Paket, das man im Auge behalten muss.
- Einträge insgesamt
- 4
- Erste → letzte
- 11.2023 06.2026
- Ohne Fix
- 0
- In Angriffen ausgenutzt
- 0
Verteilung nach Schweregrad
- Hoch 1
- Mittel 3
Veröffentlichungen pro Jahr
- 2023: 1
- 2024: 1
- 2025: 0
- 2026: 2
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Omnisend for WooCommerce <= 1.18.0 - Unauthenticated Omnisend Account Takeover via Predictable Connect Token dieser Eintrag
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