EUVD-2026-38276Published

User Manager can demote bot accounts to guest without bot-management permission

cve-program · CVE-2026-8823

Published

Mattermost

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "defaultStatus": "unaffected",
                    "product": "Mattermost",
                    "vendor": "Mattermost",
                    "versions": [
                        {
                            "lessThanOrEqual": "11.7.0",
                            "status": "affected",
                            "version": "11.7.0",
                            "versionType": "semver"
                        },
                        {
                            "lessThanOrEqual": "10.11.17",
                            "status": "affected",
                            "version": "10.11.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "11.8.0",
                            "status": "unaffected"
                        },
                        {
                            "version": "11.7.1",
                            "status": "unaffected"
                        },
                        {
                            "version": "10.11.18",
                            "status": "unaffected"
                        }
                    ]
                }

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

euvd · EUVD-2026-38276

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: Jun 22, 2026, 1:41:28 PM

dateUpdated: Jun 22, 2026, 4:12:31 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-2026-8823

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-863

Original publisher date fields

published: 2026-06-22T16:16:42.853

lastModified: 2026-06-26T16:39:58.273

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.

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

osv · GHSA-xmfh-3ccg-c9fx

Published

github.com/mattermost/mattermost-server

SEMVER · introduced 11.7.0 → fixed 11.7.1

1 explicitly affected versions

11.7.0

github.com/mattermost/mattermost-server

SEMVER · introduced 10.11.0 → fixed 10.11.18

github.com/mattermost/mattermost/server/v8

SEMVER · introduced 0 → fixed 8.0.0-20260518160100-9bd77d3fc4d2

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

osv · GO-2026-6547

Published

github.com/mattermost/mattermost-server

SEMVER · introduced 10.11.0+incompatible → fixed 10.11.18+incompatible → introduced 11.7.0+incompatible → fixed 11.7.1+incompatible

github.com/mattermost/mattermost-server/v5

SEMVER · introduced 0

github.com/mattermost/mattermost-server/v6

SEMVER · introduced 0

github.com/mattermost/mattermost/server/v8

SEMVER · introduced 0 → fixed 8.0.0-20260518160100-9bd77d3fc4d2

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