CVE-2021-26911

high

Description

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

References

Advisories
More

https://www.openwall.com/lists/oss-security/2021/02/17/3

https://github.com/canarymail/mailcore2/commit/45acb4efbcaa57a20ac5127dc976538671fce018

https://census-labs.com/news/category/advisories/

https://apps.apple.com/us/app/canary-mail/id1236045954

http://www.openwall.com/lists/oss-security/2021/02/17/3

https://census-labs.com/news/2021/02/17/canary-mail-app-missing-certificate-validation-check-on-imap-starttls/

Details

Source: Mitre, NVD

Published: 2021-02-17

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 5.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 7.4

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Severity: High

EPSS

EPSS: 0.00284