CVE-2020-37248
Published:June 08, 2026
Updated:June 28, 2026
OfflineIMAP before 8.0.3 trusts the server with their STARTTLS capability prior to authentication, which allows STRIPTLS/man-in-the-middle attacks, taking over the connection and extracting account credentials in cleartext.
Affected Packages
offlineimap (CONDA):
Affected version(s) >=7.3.4 <8.0.3Fix Suggestion:
Update to version 8.0.3https://github.com/OfflineIMAP/offlineimap3.git (GITHUB):
Affected version(s) >=RELEASE_${PACKAGE}_${VERSION} <8.0.3Fix Suggestion:
Update to version 8.0.3offlineimap (PYTHON):
Affected version(s) >=6.5.4 <8.0.3Fix Suggestion:
Update to version 8.0.3Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Use of Less Trusted Source
EPSS
Base Score:
0.19