CVE-2020-37248

Summary

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 Software

Weaknesses

• CWE-348: CWE-348 Use of Less Trusted Source

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

CVE Program Container

Additional References

• http://www.openwall.com/lists/oss-security/2026/06/08/3

References

• 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

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