CVE-2026-1046

See a problem?
Please try reporting it to the source first.

Source

https://cve.org/CVERecord?id=CVE-2026-1046

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-1046.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-1046

Published

2026-02-16T12:10:38.668Z

Modified

2026-07-15T01:49:03.821200145Z

Severity

7.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:L CVSS Calculator

Summary

Arbitrary application execution via unvalidated server-controlled URLs in Help menu

Details

Mattermost Desktop App versions <=6.0 6.2.0 5.2.13.0 fail to validate help links which allows a malicious Mattermost server to execute arbitrary executables on a user’s system via the user clicking on certain items in the Help menu Mattermost Advisory ID: MMSA-2026-00577

Database specific

{
    "cwe_ids": [
        "CWE-939"
    ],
    "cna_assigner": "Mattermost",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/1xxx/CVE-2026-1046.json",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "last_affected": "6.2.0"
                },
                {
                    "last_affected": "5.2.13"
                }
            ]
        }
    ]
}

References

Affected packages

Git / github.com/mattermost/desktop

Affected ranges

Type

GIT

Repo

https://github.com/mattermost/desktop

Events

Introduced

b80c7835cd84620601cfe1de7dc50450d12e2ab2

Fixed

c6cb9ed5ca9cab2c181652d27c673b8433a5bb2c

Introduced

dd2c7c4b66d726250980171a113a8764ab8f8777

Fixed

54fe4b55ba0f039d62477616025193b353a9f134

Database specific

{
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:mattermost:mattermost_desktop:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "5.13.2"
        },
        {
            "fixed": "5.13.3"
        },
        {
            "introduced": "6.0.0"
        },
        {
            "fixed": "6.0.3"
        }
    ]
}

Affected versions

v5.*

v5.13.2

v5.13.2-mas.1

v5.13.3-rc.1

v6.*

v6.0.0

v6.0.0-mas.1

v6.0.1

v6.0.1-mas.1

v6.0.1-rc.1

v6.0.1-rc.2

v6.0.2

v6.0.2-mas.1

v6.0.2-rc.1

v6.0.2-rc.2

v6.0.3-mas.1

v6.0.3-rc.1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-1046.json"