CVE-2020-37248

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/OfflineIMAP/offlineimap/issues/669
https://github.com/OfflineIMAP/offlineimap3/commit/46505c53ef995455d66c685f9ec3ff6ea93dbb74
https://github.com/OfflineIMAP/offlineimap3/issues/222
https://pypi.org/project/offlineimap/#history
http://www.openwall.com/lists/oss-security/2026/06/08/3

Configurations

No configuration.

History

No history.

Information

Published : 2026-06-08 16:16

Updated : 2026-07-23 07:10

NVD link : CVE-2020-37248

Mitre link : CVE-2020-37248

CVE.ORG link : CVE-2020-37248

JSON object : View

Products Affected

No product.

CWE

CWE-348

Use of Less Trusted Source

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