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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
OfflineIMAP OfflineIMAP
Default version status: unaffected
0 to < 8.0.3affected
pkg:pypi/offlineimapReferences
- https://github.com/OfflineIMAP/offlineimap3/commit/46505c53ef995455d66c685f9ec3ff6ea93dbb74 ↗
- https://github.com/OfflineIMAP/offlineimap3/issues/222 ↗
- https://github.com/OfflineIMAP/offlineimap/issues/669 ↗
- https://pypi.org/project/offlineimap/#history ↗
- http://www.openwall.com/lists/oss-security/2026/06/08/3 ↗