Medium
SAML to email switch possible when email signin is disabled
Type: advisorySources: OSV
Mattermost versions 9.5.x <= 9.5.3, 9.7.x <= 9.7.1, 9.6.x <= 9.6.1 and 8.1.x <= 8.1.12 fail to check if the email signup configuration option is enabled when a user requests to switch from SAML to Email. This allows the user to switch their authentication mail from SAML to email and possibly edit personal details that were otherwise non-editable and provided by the SAML provider.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2024-5270
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 19:45 UTC · Revision 1
Source evidence
SAML to email switch possible when email signin is disabled
core-osv · Original sourcePublished 26 May 2024, 13:30 UTC
Mattermost versions 9.5.x <= 9.5.3, 9.7.x <= 9.7.1, 9.6.x <= 9.6.1 and 8.1.x <= 8.1.12 fail to check if the email signup configuration option is enabled when a user requests to switch from SAML to Email. This allows the user to switch their authentication mail from SAML to email and possibly edit personal details that were otherwise non-editable and provided by the SAML provider.
osv:CVE-2024-5270
Complete source record
{
"id": "23d8723ef22fbffba6a416ebaa49904c0be7ee3800053de1941772f77e406331",
"url": "https://osv.dev/vulnerability/CVE-2024-5270",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "SAML to email switch possible when email signin is disabled",
"summary": "Mattermost versions 9.5.x <= 9.5.3, 9.7.x <= 9.7.1, 9.6.x <= 9.6.1 and 8.1.x <= 8.1.12 fail to check if the email signup configuration option is enabled when a user requests to switch from SAML to Email. This allows the user to switch their authentication mail from SAML to email and possibly edit personal details that were otherwise non-editable and provided by the SAML provider.",
"evidence": "osv:CVE-2024-5270",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2024-5270",
"aliases": [
"CVE-2024-5270"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/mattermost/mattermost",
"type": "GIT",
"events": [
{
"introduced": "096c9ea12a2144f832e330e9a0f4d3862ca20b9f"
},
{
"fixed": "139d287d701e653852c04b7252691c5f69884d0a"
},
{
"introduced": "99d819d25d0b16b3faed901b1fe5c41de7655e9c"
},
{
"fixed": "e9726543acdeb2a6299f0afd5a0e8d727bab6dcf"
},
{
"introduced": "9fc0f464a376499ca5859944483f09a32370a85a"
},
{
"fixed": "6b6068b174ce63a6c6ee8026bd9bd3db15fe7f5b"
},
{
"introduced": "7a9257d35b66fc46a7ac682dc6b720857c630ee9"
},
{
"fixed": "6b9c604be70563ad1c1b9c35ddd343a4078a8464"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "8.1.0"
},
{
"fixed": "8.1.13"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "9.5.0"
},
{
"fixed": "9.5.4"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "9.6.0"
},
{
"fixed": "9.6.2"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "9.7.0"
},
{
"fixed": "9.7.2"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v8.1.13-rc1",
"v9.5.4-rc1",
"v9.6.2-rc1",
"v9.7.1",
"v9.7.0-rc3",
"v9.7.0",
"@mattermost/types@9.7.0",
"@mattermost/client@9.7.0",
"v8.1.12",
"v9.5.3",
"v8.1.12-rc3",
"v9.5.3-rc3",
"v9.6.1-rc3",
"v9.6.1",
"v8.1.12-rc2",
"v9.5.3-rc2",
"v9.6.1-rc2",
"v8.1.12-rc1",
"v9.5.3-rc1",
"v9.6.1-rc1",
"v8.1.11-rc1",
"v8.1.11",
"v9.5.2",
"v9.6.0-rc3",
"v9.6.0",
"@mattermost/types@9.6.0",
"@mattermost/client@9.6.0",
"v8.1.10-rc1",
"v8.1.10",
"v9.5.1-rc1",
"v9.5.1",
"v9.5.0-rc3",
"v9.5.0",
"@mattermost/types@9.5.0",
"@mattermost/client@9.5.0",
"v8.1.9",
"v8.1.9-rc2",
"v8.1.9-rc1",
"v8.1.8",
"v8.1.8-rc2",
"v8.1.8-rc1",
"v8.1.7-rc3",
"v8.1.7",
"v8.1.7-rc2",
"v8.1.7-rc1",
"v8.1.6-rc1",
"v8.1.6",
"v8.1.5-rc2",
"v8.1.5",
"v8.1.5-rc1",
"v8.1.4-rc2",
"v8.1.4",
"v8.1.4-rc1",
"v8.1.3-rc2",
"v8.1.3",
"v8.1.3-rc1",
"v8.1.2-rc2",
"v8.1.2",
"v8.1.2-rc1",
"v8.1.1-rc2",
"v8.1.1",
"@mattermost/types@8.1.1",
"@mattermost/client@8.1.1",
"v8.1.1-rc1",
"v8.1.0-rc2",
"v8.1.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-5270.json"
}
}
],
"modified": "2026-10-28T02:30:22.891800008Z",
"provider": "osv",
"references": [
"https://mattermost.com/security-updates",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/5xxx/CVE-2024-5270.json",
"https://nvd.nist.gov/vuln/detail/CVE-2024-5270"
],
"provider_metadata": {
"cwe_ids": [
"CWE-284"
],
"cna_assigner": "Mattermost",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"introduced": "9.5.0"
},
{
"last_affected": "9.5.3"
},
{
"introduced": "9.7.0"
},
{
"last_affected": "9.7.1"
},
{
"introduced": "9.6.0"
},
{
"last_affected": "9.6.1"
},
{
"introduced": "8.1.0"
},
{
"last_affected": "8.1.12"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/5xxx/CVE-2024-5270.json"
}
},
"related_cves": [
{
"value": "CVE-2024-5270",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 489304,
"published_at": "2024-05-26T13:30:53.07+00:00"
}