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CVE-2026-115785

Zimbra Collaboration Suite Data Source Test SMTP Command Injection via Unsanitized Email Address

Severity
Medium 4.3
Published
23 Oct 2026
Last changed
2 Nov 2026
Added to UpHeron
3 Nov 2026
Sources
NVD, CVE Program

Description

An SMTP command injection vulnerability in the data-source testing functionality of Zimbra Collaboration Suite (ZCS) allows an ordinary authenticated user with account options enabled to inject CR/LF into the emailAddress inserted into an SMTP envelope command by a JSON SOAP request. After a successful preliminary POP3 or IMAP login, Zimbra sends the injected commands to the selected SMTP…

Affected software

SoftwareAffected versions
Zimbra CollaborationServers and applications · cna:zimbra|zimbra collaboration suite
  • Every version up to 10.1.20
Zimbra CollaborationServers and applications · cpe:a:synacor:zimbra_collaboration_suite
  • Every version up to 10.1.20

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-115785
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-115785