Medium severity · published May 28, 2021
CVE-2020-27826
A flaw was found in Keycloak before version 12.0.0 where it is possible to update the user's metadata attributes using Account REST API
4.2
CVSS
0.6%
EPSS
No
On KEV
Description
A flaw was found in Keycloak before version 12.0.0 where it is possible to update the user's metadata attributes using Account REST API. This flaw allows an attacker to change its own NameID attribute to impersonate the admin user for any particular application.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 47% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Keycloak · Redhat
before 12.0.0 · source: NVD
SS
Single Sign-on · Redhat
7.4; 7.4.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-27826
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-27826
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1905089
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