offlineimap3: OfflineIMAP before 8.0.3 trusts the server with their STARTTLS capability prior to authentication, which allows STRIP...
CVE-2020-37248 is fixed in offlineimap3 on 1 platform by DEBIAN-CVE-2020-37248 (version 8.0.3+dfsg-1), released June 8, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| offlineimap3 · Debian 14 | 8.0.3+dfsg-1 | DEBIAN-CVE-2020-37248 | Jun 8, 2026 |
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