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Mattermost has an Incorrect Authorization issue in github.com/mattermost/mattermost-server

Type: advisorySource: OSV1 source record

Mattermost has an Incorrect Authorization issue in github.com/mattermost/mattermost-server

Announced Source revision 1
Original source ↗

GO-2026-6547

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:GO-2026-6547

github.com/mattermost/mattermost-server

Source reference: /affected/0/package/name

Affected versions
Not stated in this record
Fixed versions
10.11.18+incompatible

Source reference: /affected/0/ranges

11.7.1+incompatible

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

github.com/mattermost/mattermost-server/v5

Source reference: /affected/1/package/name

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

github.com/mattermost/mattermost-server/v6

Source reference: /affected/2/package/name

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

github.com/mattermost/mattermost/server/v8

Source reference: /affected/3/package/name

Affected versions
Not stated in this record
Fixed versions
8.0.0-20260518160100-9bd77d3fc4d2

Source reference: /affected/3/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "10.11.0+incompatible"
          },
          {
            "fixed": "10.11.18+incompatible"
          },
          {
            "introduced": "11.7.0+incompatible"
          },
          {
            "fixed": "11.7.1+incompatible"
          }
        ]
      }
    ],
    "package": {
      "name": "github.com/mattermost/mattermost-server",
      "purl": "pkg:golang/github.com/mattermost/mattermost-server",
      "ecosystem": "Go"
    },
    "database_specific": {
      "source": "https://vuln.go.dev/ID/GO-2026-6547.json"
    },
    "ecosystem_specific": {}
  },
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "github.com/mattermost/mattermost-server/v5",
      "purl": "pkg:golang/github.com/mattermost/mattermost-server/v5",
      "ecosystem": "Go"
    },
    "database_specific": {
      "source": "https://vuln.go.dev/ID/GO-2026-6547.json"
    },
    "ecosystem_specific": {}
  },
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "github.com/mattermost/mattermost-server/v6",
      "purl": "pkg:golang/github.com/mattermost/mattermost-server/v6",
      "ecosystem": "Go"
    },
    "database_specific": {
      "source": "https://vuln.go.dev/ID/GO-2026-6547.json"
    },
    "ecosystem_specific": {}
  },
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "8.0.0-20260518160100-9bd77d3fc4d2"
          }
        ]
      }
    ],
    "package": {
      "name": "github.com/mattermost/mattermost/server/v8",
      "purl": "pkg:golang/github.com/mattermost/mattermost/server/v8",
      "ecosystem": "Go"
    },
    "database_specific": {
      "source": "https://vuln.go.dev/ID/GO-2026-6547.json"
    },
    "ecosystem_specific": {}
  }
]
Related CVEs
CVE-2026-8823

Source reference: /aliases

Publisher severity

No explicit severity was provided.

Event
#63829 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement