CVE-2020-37248

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CVSS 3.1

6.5 medium

EPSS

<1%p8

Published

Jun 8, 2026 (Jun 8, 2026)

Modified

Jul 23, 2026

Description

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.

Weakness: CWE-348
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.2%)

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