CVE-2026-22880

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Source

https://cve.org/CVERecord?id=CVE-2026-22880

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-22880.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-22880

Published

2026-05-21T08:22:00Z

Modified

2026-08-12T03:51:12Z

Severity

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

Summary

Mobile SSO authentication flow allows credential theft via malicious server

Details

Mattermost Mobile Apps versions <=2.37 11.4 2.0.37 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to properly validate the SSO authentication callback origin which allows an attacker controlling a malicious Mattermost server to steal user credentials for a legitimate Mattermost server via relaying the SSO code exchange flow through the mobile application. Mattermost Advisory ID: MMSA-2025-00564

Database specific

{
    "cna_assigner": "Mattermost",
    "cwe_ids": [
        "CWE-352"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22880.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "last_affected": "2.0.37"
                },
                {
                    "last_affected": "11.0.4"
                },
                {
                    "last_affected": "11.1.3"
                },
                {
                    "last_affected": "11.3.2"
                },
                {
                    "last_affected": "10.11.11"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}

References

Affected packages

Git / github.com/mattermost/mattermost-mobile

Affected ranges

Type

GIT

Repo

https://github.com/mattermost/mattermost-mobile

Events

Introduced

Fixed

545b8e9a4bca07022b756d35a7cd46972b449c75

Database specific

Show details

{
    "cpe": "cpe:2.3:a:mattermost:mattermost_mobile:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.37.1"
        }
    ],
    "source": "CPE_RANGE"
}

Affected versions

v2.*

v2.37.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-22880.json"