Vulnerability Database

300,445

Total vulnerabilities in the database

CVE-2011-1926

The STARTTLS implementation in Cyrus IMAP Server before 2.4.7 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack, a similar issue to CVE-2011-0411.

  • Published: May 23, 2011
  • Updated: Nov 9, 2025
  • CVE: CVE-2011-1926
  • Severity: Medium
  • Exploit:

CVSS v2:

  • Severity: Medium
  • Score: 5.1
  • AV:N/AC:H/Au:N/C:P/I:P/A:P

CWEs: