CVE-2021-26911

HIGH 7.4CVE-2021-26911 · Published 17/02/2021 · updated 17/06/2026

In short

CVE-2021-26911 is a HIGH (CVSS 7.4) vulnerability affecting canary mail (canarymail), mailcore2 (libmailcore).
Chance of exploitation in the next 30 days (EPSS): 1.1%, higher than 65.4% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
canary mail canarymail	`= 3.20= 3.21`	No fix yet
mailcore2 libmailcore	`= 0.6.4`	No fix yet

core/imap/MCIMAPSession.cpp in Canary Mail before 3.22 has Missing SSL Certificate Validation for IMAP in STARTTLS mode.

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