CVE-2020-37248
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-348 |
| Vendor | offlineimap |
| Product | offlineimap |
| Published | Jun 8, 2026 |
| Last Updated | Jun 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
None
Affected Versions
OfflineIMAP / OfflineIMAP
0 < 8.0.3
References
github.com: https://github.com/OfflineIMAP/offlineimap3/commit/46505c53ef995455d66c685f9ec3ff6ea93dbb74 github.com: https://github.com/OfflineIMAP/offlineimap3/issues/222 github.com: https://github.com/OfflineIMAP/offlineimap/issues/669 pypi.org: https://pypi.org/project/offlineimap/#history openwall.com: http://www.openwall.com/lists/oss-security/2026/06/08/3