CVE-2025-50340: Medium severity SOGo Webmail vulnerability
An Insecure Direct Object Reference (IDOR) vulnerability was discovered in SOGo Webmail thru 5.6.0, allowing an authenticated user to send emails on behalf of other users by manipulating a user-controlled identifier in the email-sending request. The server fails to verify whether the authenticated user is authorized to use the specified sender identity, resulting in unauthorized message delivery as another user. This can lead to impersonation, phishing, or unauthorized communication within the system. NOTE: this is disputed by the Supplier because the only effective way to prevent this sender spoofing is on the SMTP server, not within a client such as SOGo.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-50340?
CVE-2025-50340 is classified as a high-severity vulnerability due to the potential for unauthorized email manipulation by authenticated users.
How do I fix CVE-2025-50340?
To fix CVE-2025-50340, update SOGo Webmail to version 5.6.1 or later, where this vulnerability has been addressed.
What is the impact of CVE-2025-50340?
The impact of CVE-2025-50340 allows authenticated users to send emails as other users, potentially leading to phishing attacks or unauthorized communication.
Who is affected by CVE-2025-50340?
CVE-2025-50340 affects all versions of SOGo Webmail up to and including 5.6.0.
What type of vulnerability is CVE-2025-50340?
CVE-2025-50340 is an Insecure Direct Object Reference (IDOR) vulnerability that arises from improper validation of user-controlled identifiers.