RainLoop is an open-source web-based email client used by thousands of organizations, which is affected by a vulnerability, tracked as CVE-2022-29360, that can be exploited to steal users’ emails.
The vulnerability is a stored cross-site scripting (XSS) issue that impacts RainLoop version 1.16.0, which is the latest version of the software, using default configurations.
“The code vulnerability described in this blog post can be easily exploited by an attacker by sending a malicious email to a victim that uses RainLoop as a mail client. When the email is viewed by the victim, the attacker gains full control over the session of the victim and can steal any of their emails, including those that contain highly sensitive information such as passwords, documents, and password reset links.” reads the post published by Sonar.
Sonar initially reported the flaw to RainLoop in November 2021, but the company has yet to receive a response from the development team.
The researchers recommend the RainLoop fork SnappyMail which is not affected by the vulnerability.
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(SecurityAffairs – hacking, RainLoop)