CVE WatchJul 23, 2026

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 a

CVSS

6.5

Medium

EPSS

0.2%

KEV

—

Exploit Today

0-100

Published: Jun 8, 2026 · Last modified: Jul 23, 2026 · CWE-348

EPSS · 30d

0.2%EPSS · 30 days0.2%

2026-07-112026-08-07

Technical 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.

Official references

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