CVE-2021-26911

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Source
https://cve.org/CVERecord?id=CVE-2021-26911
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-26911.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-26911
Published
2021-02-17T21:15:12.900Z
Modified
2026-04-11T13:54:02.911038Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
[none]
Details

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

References

Affected packages

Git / github.com/canarymail/mailcore2

Affected ranges

Type
GIT
Repo
https://github.com/canarymail/mailcore2
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
45acb4efbcaa57a20ac5127dc976538671fce018
Type
GIT
Repo
https://github.com/mailcore/mailcore2
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
5fb0f93010ff7af426e72e9066db8cb19b8154be
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.6.4"
        }
    ]
}

Affected versions

0.*
0.1
0.2
0.2.pre1
0.3.pre1
0.5
0.5.1
0.6
0.6.1
0.6.2
0.6.3
0.6.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-26911.json"
vanir_signatures_modified 
"2026-04-11T13:54:02Z"
unresolved_ranges 
[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "3.20"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "3.21"
            }
        ]
    }
]
vanir_signatures 
[
    {
        "source": "https://github.com/canarymail/mailcore2/commit/45acb4efbcaa57a20ac5127dc976538671fce018",
        "signature_type": "Function",
        "id": "CVE-2021-26911-b6c26fdd",
        "target": {
            "function": "IMAPSession::connect",
            "file": "src/core/imap/MCIMAPSession.cpp"
        },
        "digest": {
            "length": 2915.0,
            "function_hash": "58276512858806844581212893390254139380"
        },
        "signature_version": "v1",
        "deprecated": false
    },
    {
        "source": "https://github.com/canarymail/mailcore2/commit/45acb4efbcaa57a20ac5127dc976538671fce018",
        "signature_type": "Line",
        "id": "CVE-2021-26911-ecff7eb9",
        "target": {
            "file": "src/core/imap/MCIMAPSession.cpp"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "183920586235143298930693814241404593940",
                "295238391851967688791346911655989942881",
                "188189554356135633814135185334812978196",
                "329706182311884316420429833290968507427"
            ]
        },
        "signature_version": "v1",
        "deprecated": false
    }
]