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CVE-2020-27826

MEDIUMCVSS 4.2/10EPSS 0.57%

Last modified

CVE-2020-27826 is a medium-severity vulnerability rated 4.2/10 on the CVSS scale. 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.. EPSS estimates a 0.57% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
4.2/10

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

EPSS Probability
0.57%

42.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
RedhatKeycloak< 12.0.0
RedhatSingle Sign-OnAll versions
RedhatSingle Sign-On7.4
RedhatSingle Sign-On7.4.4

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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. This flaw allows an attacker to change its own NameID attribute to impersonate the admin user for any particular application.
How severe is CVE-2020-27826?
CVE-2020-27826 has a CVSS score of 4.2/10 (MEDIUM severity). The EPSS model estimates a 0.57% probability of exploitation in the next 30 days.
How do I fix CVE-2020-27826?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-27826?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST