CVE-2025-21088

Source
https://cve.org/CVERecord?id=CVE-2025-21088
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21088.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-21088
Aliases
Downstream
Related
Published
2025-01-15T16:15:32.413Z
Modified
2026-03-12T17:39:26.227106Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

Mattermost versions 10.2.x <= 10.2.0, 9.11.x <= 9.11.5, 10.0.x <= 10.0.3, 10.1.x <= 10.1.3 fail to properly validate the style of proto supplied to an action's style in post.props.attachments, which allows an attacker to crash the frontend via crafted malicious input.

References

Affected packages

Git / github.com/mattermost/mattermost-server

Affected ranges

Type
GIT
Repo
https://github.com/mattermost/mattermost-server
Events
Database specific
{
    "versions": [
        {
            "introduced": "9.11.0"
        },
        {
            "fixed": "9.11.6"
        },
        {
            "introduced": "10.0.0"
        },
        {
            "fixed": "10.0.4"
        },
        {
            "introduced": "10.1.0"
        },
        {
            "fixed": "10.1.4"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "10.2.0-NA"
        }
    ]
}

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21088.json"