CVE-2025-12689

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Source
https://cve.org/CVERecord?id=CVE-2025-12689
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-12689.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-12689
Aliases
Downstream
Related
Published
2025-12-17T18:14:10.973Z
Modified
2026-08-12T03:51:42.420543224Z
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
DoS in Calls plugin via malformed UTF-8 in WebSocket request
Details

Mattermost versions 11.0.x <= 11.0.4, 10.12.x <= 10.12.2, 10.11.x <= 10.11.6 fail to check WebSocket request field for proper UTF-8 format, which allows attacker to crash Calls plug-in via sending malformed request.

Database specific 
{
    "cwe_ids": [
        "CWE-1287"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/12xxx/CVE-2025-12689.json",
    "cna_assigner": "Mattermost",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "11.0.0"
                },
                {
                    "last_affected": "11.0.4"
                },
                {
                    "introduced": "10.12.0"
                },
                {
                    "last_affected": "10.12.2"
                },
                {
                    "introduced": "10.11.0"
                },
                {
                    "last_affected": "10.11.6"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/mattermost/mattermost

Affected ranges

Type
GIT
Repo
https://github.com/mattermost/mattermost
Events
Introduced
5b955468ea1ea8b56c0fb10feb258a36a767d7bb
Fixed
9d74b930db166e933d66d1873fb87afa6bc3e600
Introduced
ba3dc1612ce8f37bf9814b1ea6364181fb5abd62
Fixed
09ae989823a456a6831eca1eb4f49c71589dafab
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
33fcf2d87f96ed29b1196d3ebb22202ed86712c9
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "introduced": "10.11.0"
        },
        {
            "fixed": "10.11.7"
        },
        {
            "introduced": "10.12.0"
        },
        {
            "fixed": "10.12.3"
        },
        {
            "introduced": "11.0.0"
        },
        {
            "fixed": "11.0.5"
        }
    ]
}

Affected versions

@mattermost/client@10.*
@mattermost/client@10.11.0
@mattermost/client@10.12.0
@mattermost/client@11.*
@mattermost/client@11.0.4
@mattermost/types@10.*
@mattermost/types@10.11.0
@mattermost/types@10.12.0
@mattermost/types@11.*
@mattermost/types@11.0.4
Other
cloud-2022-07-20-1
cloud-2022-08-10-1
cloud-2022-09-08-1
cloud-2022-10-06-1
cloud-2022-11-11-1
cloud-2022-11-24-1
mattermost-redux@10.*
mattermost-redux@10.11.0
mattermost-redux@10.12.0
mattermost-redux@11.*
mattermost-redux@11.0.4
preview-v0.*
preview-v0.1
server/public/v0.*
server/public/v0.0.10
server/public/v0.0.11
server/public/v0.0.12
server/public/v0.0.13
server/public/v0.0.14
server/public/v0.0.15
server/public/v0.0.16
server/public/v0.0.17
server/public/v0.0.18
server/public/v0.0.5
server/public/v0.0.6
server/public/v0.0.7
server/public/v0.0.8
server/public/v0.0.9
server/public/v0.1.0
server/public/v0.1.1
server/public/v0.1.10
server/public/v0.1.11
server/public/v0.1.12
server/public/v0.1.13
server/public/v0.1.14
server/public/v0.1.15
server/public/v0.1.16
server/public/v0.1.17
server/public/v0.1.18
server/public/v0.1.19
server/public/v0.1.2
server/public/v0.1.3
server/public/v0.1.4
server/public/v0.1.5
server/public/v0.1.6
server/public/v0.1.7
server/public/v0.1.8
server/public/v0.1.9
v0.*
v0.5.0
v10.*
v10.11.0
v10.11.0-rc3
v10.11.1
v10.11.1-rc1
v10.11.2
v10.11.2-rc1
v10.11.2-rc2
v10.11.3
v10.11.4
v10.11.4-rc1
v10.11.4-rc2
v10.11.4-rc3
v10.11.5
v10.11.6
v10.12.0
v10.12.1
v10.12.1-rc1
v10.12.2
v11.*
v11.0.0-alpha.1
v11.0.1
v11.0.1-rc1
v11.0.1-rc2
v11.0.1-rc3
v11.0.2
v11.0.3
v11.0.3-rc1
v11.0.4
v4.*
v4.10.0-rc1
v4.2.0-rc1
v4.3.0-rc1
v4.4.0-rc1
v4.5.0-rc1
v4.6.0-rc1
v4.6.0-rc2
v4.7.0-rc1
v4.8.0-rc1
v4.9.0-rc1
v5.*
v5.0.0-rc1
v5.1.0-rc1
v5.2.0-rc1
v5.2.0-rc2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-12689.json"