Vulnerability · Published Feb 17, 2021 · Assigned by mitre

CVE-2021-26911

High 7.4

In plain English

A high-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities).

Severity (CVSS NVD)7.4High

Exploit odds (30 days)1.1%top 34.5% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

References

https://apps.apple.com/us/app/canary-mail/id1236045954 x_refsource_MISC
https://census-labs.com/news/category/advisories/ x_refsource_MISC
https://www.openwall.com/lists/oss-security/2021/02/17/3 x_refsource_MISC
https://census-labs.com/news/2021/02/17/canary-mail-app-missing-certificate-validation-check-on-imap-starttls/ x_refsource_MISC
https://github.com/canarymail/mailcore2/commit/45acb4efbcaa57a20ac5127dc976538671fce018 x_refsource_CONFIRM
[oss-security] 20210217 CVE-2021-26911: Canary Mail with IMAP STARTTLS missing certificate validation mailing-list, x_refsource_MLIST