Medium severity · published Aug 26, 2022
CVE-2021-3754
A flaw was found in keycloak where an attacker is able to register himself with the username same as the email ID of any existing user
5.3
CVSS
2.2%
EPSS
No
On KEV
Description
A flaw was found in keycloak where an attacker is able to register himself with the username same as the email ID of any existing user. This may cause trouble in getting password recovery email in case the user forgets the password.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.2% · higher than 82% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Keycloak · Redhat
All versions, or not specified · source: NVD
SS
Single Sign-on · Redhat
7.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3754
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3754
Vendor Advisory
https://access.redhat.com/security/cve/CVE-2021-3754
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1999196
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