| Titre | Chatwoot * Origin Validation Error |
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| Description | An unrestricted postMessage vulnerability in Chatwoot widget integrations allows attackers to hijack the cw_conversation token via a crafted message. With one click, an attacker can steal this token and retrieve the full conversation history of a victim, potentially exposing sensitive information. The embedded widget listens to postMessage events without validating the origin of the sender.
A malicious site can send a forged postMessage with the event popoutChatWindow, specifying a malicious baseUrl. Without validating the message origin, the widget directly calls popoutChatWindow with the supplied baseUrl. This function builds a popup URL that includes the cw_conversation cookie value as a parameter and opens it. The attacker can intercept the popup into their own controlled window and capture the cw_conversation token directly from the request URL. |
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| La source | ⚠️ https://hckwr.com/blog/multiple-vulnerabilities-in-chatwoot/ |
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| Utilisateur | fpatrik (UID 9157) |
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| Soumission | 12/10/2025 14:55 (il y a 8 mois) |
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| Modérer | 26/10/2025 06:12 (14 days later) |
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| Statut | Accepté |
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| Entrée VulDB | 329916 [chatwoot jusqu’à 4.7.0 Widget IFrameHelper.js initPostMessageCommunication baseUrl élévation de privilèges] |
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| Points | 20 |
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