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

2026-07-09T01:30:58.668156Z

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.

Database specific

{
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "3.20"
                },
                {
                    "last_affected": "3.20"
                },
                {
                    "introduced": "3.21"
                },
                {
                    "last_affected": "3.21"
                }
            ],
            "source": "CPE_STRING",
            "vendor_product": "canarymail:canary_mail",
            "cpes": [
                "cpe:2.3:a:canarymail:canary_mail:3.20:*:*:*:*:iphone_os:*:*",
                "cpe:2.3:a:canarymail:canary_mail:3.21:*:*:*:*:iphone_os:*:*"
            ]
        }
    ]
}

References

Affected packages

Git / github.com/canarymail/mailcore2

Affected ranges

Type

GIT

Repo

https://github.com/canarymail/mailcore2

Events

Introduced

Fixed

45acb4efbcaa57a20ac5127dc976538671fce018

Database specific

{
    "source": "REFERENCES"
}

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

Database specific

vanir_signatures_modified

"2026-07-09T01:30:58Z"

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-26911.json"

vanir_signatures

[
    {
        "id": "CVE-2021-26911-b6c26fdd",
        "digest": {
            "function_hash": "58276512858806844581212893390254139380",
            "length": 2915.0
        },
        "signature_version": "v1",
        "signature_type": "Function",
        "source": "https://github.com/canarymail/mailcore2/commit/45acb4efbcaa57a20ac5127dc976538671fce018",
        "deprecated": false,
        "target": {
            "function": "IMAPSession::connect",
            "file": "src/core/imap/MCIMAPSession.cpp"
        }
    },
    {
        "id": "CVE-2021-26911-ecff7eb9",
        "digest": {
            "line_hashes": [
                "183920586235143298930693814241404593940",
                "295238391851967688791346911655989942881",
                "188189554356135633814135185334812978196",
                "329706182311884316420429833290968507427"
            ],
            "threshold": 0.9
        },
        "signature_version": "v1",
        "signature_type": "Line",
        "source": "https://github.com/canarymail/mailcore2/commit/45acb4efbcaa57a20ac5127dc976538671fce018",
        "deprecated": false,
        "target": {
            "file": "src/core/imap/MCIMAPSession.cpp"
        }
    }
]

Git / github.com/mailcore/mailcore2

Affected ranges

Type

GIT

Repo

https://github.com/mailcore/mailcore2

Events

Introduced

5fb0f93010ff7af426e72e9066db8cb19b8154be

Last affected

5fb0f93010ff7af426e72e9066db8cb19b8154be

Database specific

{
    "source": "CPE_STRING",
    "cpe": "cpe:2.3:a:libmailcore:mailcore2:0.6.4:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0.6.4"
        },
        {
            "last_affected": "0.6.4"
        }
    ]
}

Affected versions

0.*

0.6.4

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-26911.json"