CVE-2021-26911 Security feature bypass in n/a

High 7.4 Published Updated

Canary Mail fails to validate SSL certificates in IMAP STARTTLS mode, allowing attackers to intercept email traffic via man-in-the-middle attacks.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2021-26911?

CVE-2021-26911 is a high-severity vulnerability in n/a, published on 17 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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

Weakness: CWE-295

Which versions are affected by CVE-2021-26911?

It affects 2 products.

Products include Canarymail Canary Mail, Libmailcore Mailcore2.

How do I fix CVE-2021-26911?

No fix has been published for CVE-2021-26911 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-26911 being exploited?

There is no known exploitation of CVE-2021-26911 in the wild and no public exploit code.

Sources

Also known as GHSA-hw2c-8pmg-px6w.

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