Medium severity · published Nov 28, 2024
CVE-2024-11599
Domain Restriction Bypass on Registration
5.3
CVSS
0.5%
EPSS
No
On KEV
Description
Mattermost versions 10.0.x <= 10.0.1, 10.1.x <= 10.1.1, 9.11.x <= 9.11.3, 9.5.x <= 9.5.11 fail to properly validate email addresses which allows an unauthenticated user to bypass email domain restrictions via carefully crafted input on email registration.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
Mattermost · Mattermost
10.0.0 through 10.0.1; 10.1.0 through 10.1.1; 9.11.0 through 9.11.3; 9.5.0 through 9.5.11 · source: vendor, CISA
MS
Mattermost Server · Mattermost
9.5.0 before 9.5.12; 9.11.0 before 9.11.4; 10.0.0 before 10.0.2; 10.1.0 before 10.1.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-11599
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-11599
Vendor Advisory
https://mattermost.com/security-updates
More from Mattermost
9.9
CVE-2026-4858
Path traversal in integration action URL leading to arbitrary API execution via system admin’s auth token.
9.9
CVE-2025-12421
Account Takeover via Code Exchange Endpoint
9.9
CVE-2025-12419
Account takeover on OAuth/OpenID-enabled servers
9.9
CVE-2025-4981
Path Traversal Leading to RCE by Any Authenticated Mattermost User
9.6
CVE-2024-39777
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5 and 9.8.x <= 9.8.1 fail to disallow unsolicited invites to expose access to local channels, when shared channels…