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Information Disclosure in Common Teams API

cve-program · CVE-2025-12559

Published

Mattermost

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "defaultStatus": "unaffected",
                    "product": "Mattermost",
                    "vendor": "Mattermost",
                    "versions": [
                        {
                            "lessThanOrEqual": "11.0.2",
                            "status": "affected",
                            "version": "11.0.0",
                            "versionType": "semver"
                        },
                        {
                            "lessThanOrEqual": "10.12.1",
                            "status": "affected",
                            "version": "10.12.0",
                            "versionType": "semver"
                        },
                        {
                            "lessThanOrEqual": "10.11.4",
                            "status": "affected",
                            "version": "10.11.0",
                            "versionType": "semver"
                        },
                        {
                            "lessThanOrEqual": "10.5.12",
                            "status": "affected",
                            "version": "10.5.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "11.1.0",
                            "status": "unaffected"
                        },
                        {
                            "version": "11.0.3",
                            "status": "unaffected"
                        },
                        {
                            "version": "10.12.2",
                            "status": "unaffected"
                        },
                        {
                            "version": "10.11.5",
                            "status": "unaffected"
                        },
                        {
                            "version": "10.5.13",
                            "status": "unaffected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

euvd · EUVD-2025-199831

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Nov 27, 2025, 4:36:30 PM

dateUpdated: Nov 28, 2025, 3:20:44 PM

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

nvd · CVE-2025-12559

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-200

Original publisher date fields

published: 2025-11-27T17:15:46.530

lastModified: 2026-10-19T13:10:00.110

1 source CPE criteria · context only
  • cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GHSA-4g87-9x45-cx2h

Published

github.com/mattermost/mattermost/server/v8

Go

SEMVER · introduced 0 → fixed 8.0.0-20251015091448-abbf01b9db45

github.com/mattermost/mattermost-server

Go

SEMVER · introduced 11.0.0 → fixed 11.0.3

github.com/mattermost/mattermost-server

Go

SEMVER · introduced 10.12.0 → fixed 10.12.2

github.com/mattermost/mattermost-server

Go

SEMVER · introduced 10.11.0 → fixed 10.11.5

github.com/mattermost/mattermost-server

Go

SEMVER · introduced 10.5.0 → fixed 10.5.13

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GO-2025-4169

Published

github.com/mattermost/mattermost-server

Go

SEMVER · introduced 0

github.com/mattermost/mattermost-server/v5

Go

SEMVER · introduced 0

github.com/mattermost/mattermost-server/v6

Go

SEMVER · introduced 0

github.com/mattermost/mattermost/server/v8

Go

SEMVER · introduced 0 → fixed 8.0.0-20251015091448-abbf01b9db45

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 8 Nov 23:10 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current