Medium severity · published Jun 19, 2020
CVE-2018-21252
An issue was discovered in Mattermost Server before 5.2, 5.1.1, 5.0.3, and 4.10.3
4.3
CVSS
0.6%
EPSS
No
On KEV
Description
An issue was discovered in Mattermost Server before 5.2, 5.1.1, 5.0.3, and 4.10.3. Attackers could use multiple e-mail addresses to bypass a domain-based policy for signups.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MS
Mattermost Server · Mattermost
before 4.10.3; 5.0.0 before 5.0.3; 5.1.0 before 5.1.1; 5.2.0; 5.2.0; 5.2.0; +3 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-21252
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-21252
Vendor Advisory
https://mattermost.com/security-updates/
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