Medium
Unauthorized access to invite ID during team creation
Type: advisorySources: OSV
Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to filter invite IDs based on user permissions, which allows regular users to bypass access control restrictions and register unauthorized accounts via leaked invite IDs during team creation.. Mattermost Advisory ID: MMSA-2025-00565
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-2463
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 8 Nov 2026, 00:28 UTC · Revision 1
Source evidence
Unauthorized access to invite ID during team creation
core-osv · Original sourcePublished 16 Mar 2026, 11:13 UTC
Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to filter invite IDs based on user permissions, which allows regular users to bypass access control restrictions and register unauthorized accounts via leaked invite IDs during team creation.. Mattermost Advisory ID: MMSA-2025-00565
osv:CVE-2026-2463
Complete source record
{
"id": "fe2e88770bf2b3aeeaf4eaaf043cf79298c7320f36ae7b878849beeab9e30e89",
"url": "https://osv.dev/vulnerability/CVE-2026-2463",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Unauthorized access to invite ID during team creation",
"summary": "Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to filter invite IDs based on user permissions, which allows regular users to bypass access control restrictions and register unauthorized accounts via leaked invite IDs during team creation.. Mattermost Advisory ID: MMSA-2025-00565",
"evidence": "osv:CVE-2026-2463",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-2463",
"aliases": [
"CVE-2026-2463",
"GHSA-fx49-m253-27jj",
"GO-2026-4735"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/mattermost/mattermost",
"type": "GIT",
"events": [
{
"introduced": "5b955468ea1ea8b56c0fb10feb258a36a767d7bb"
},
{
"fixed": "fddd4a70bcb32eaff394a2fa5399efcd1b2ae251"
},
{
"introduced": "ab7b138824c61fe1fe815243d7e2a914dec49c8b"
},
{
"fixed": "005521aa79666e6960bc3302f6172b810f6bff3a"
},
{
"introduced": "d27a2195068ddfa3ce17cf470f9739e4edb94b83"
},
{
"fixed": "4082c3dcf285e4d1a386d2ef37f14f39dc5a0094"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "10.11.0"
},
{
"fixed": "10.11.11"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.2.0"
},
{
"fixed": "11.2.3"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.3.0"
},
{
"fixed": "11.3.1"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v10.11.11-rc1",
"v11.3.1-rc1",
"v10.11.10",
"v11.2.2",
"v11.3.0-rc4",
"v11.3.0-rc3",
"v11.3.0",
"mattermost-redux@11.3.0",
"@mattermost/types@11.3.0",
"@mattermost/client@11.3.0",
"v10.11.9",
"v11.2.1",
"v11.2.1-rc1",
"v11.2.0",
"v10.11.9-rc1",
"v10.11.8",
"v10.11.7",
"v10.11.6",
"v10.11.5",
"v10.11.4-rc3",
"v10.11.4",
"v10.11.4-rc2",
"v10.11.4-rc1",
"v10.11.3",
"v10.11.2-rc2",
"v10.11.2",
"v10.11.2-rc1",
"v10.11.1",
"v10.11.1-rc1",
"v10.11.0-rc3",
"v10.11.0",
"mattermost-redux@10.11.0",
"@mattermost/types@10.11.0",
"@mattermost/client@10.11.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-2463.json"
}
}
],
"modified": "2026-10-28T02:30:52.142413056Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/2xxx/CVE-2026-2463.json",
"https://mattermost.com/security-updates",
"https://nvd.nist.gov/vuln/detail/CVE-2026-2463"
],
"provider_metadata": {
"cwe_ids": [
"CWE-862"
],
"cna_assigner": "Mattermost",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"introduced": "11.3.0"
},
{
"last_affected": "11.3.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandaloneSingleVersion"
}
]
},
{
"extracted_events": [
{
"range": [
{
"introduced": "11.2.0"
},
{
"last_affected": "11.2.2"
},
{
"introduced": "10.11.0"
},
{
"last_affected": "10.11.10"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/2xxx/CVE-2026-2463.json"
}
},
"related_cves": [
{
"value": "CVE-2026-2463",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 520968,
"published_at": "2026-03-16T11:13:57.575+00:00"
}