CVE-2024-5270 - CVE House
Back to Database
Status published Medium CVE-2024-5270

SAML to email switch possible when email signin is disabled

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2024-5270

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Grzegorz Misiun from ING

References

More from Mattermost

View All →
CVE-2025-9084
Open redirect in OAuth login
Low 3.1
CVE-2025-9081
IDOR in board file download allows any user to download any file by UUID
Low 3.1
CVE-2025-9079
Admin RCE via prepackaged plugins by way of misconfigured imports directory
High 8
CVE-2025-9078
Weak cache keys lead to post IDOR and link preview poisoning
Medium 4.3
CVE-2025-9076
Mattermost Server exposes sensitive user credentials during shared channel membership synchronization
Medium 6.5

Affected Vendor

Affected Software

Mattermost
Vulnerable Versions:
9.5.0, 9.7.0, 9.6.0, 8.1.0, 9.8.0, 9.5.4, 9.7.2, 9.6.2, 8.1.13

Timeline

Official Publish: May 26th, 2024
Last Modified: August 1st, 2024
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Weaknesses (CWE)

CWE-284

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1068 Exploitation for Privilege Escalation
Privilege Escalation
T1078 Valid Accounts
Persistence
T1213 Data from Information Repositories
Collection
T1565.002 Stored Data Manipulation
Impact