CVE-2025-50340

MEDIUM EPSS 22.0%
Published Aug 4, 202510mo ago · Modified Jun 17, 20261w ago
4.3 CVSS 3.1
Medium
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Published Aug 4, 2025 10mo ago
Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score
4.3
Exploitability
2.8
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
22.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-639

References 4

  • bugs.debian.org https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1110604
  • github.com https://github.com/millad7/SOGo_web_mail-vulnerability-CVE-2025-50340
  • mail-archive.com https://www.mail-archive.com/users%40sogo.nu/msg34098.html
  • sogo.nu https://www.sogo.nu/

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.