CVE-2021-20195

CRITICALCVSS 9.6/10EPSS 1.25%

Last modified

CVE-2021-20195 is a critical-severity vulnerability rated 9.6/10 on the CVSS scale. A flaw was found in keycloak in versions before 13.0.0. A Self Stored XSS attack vector escalating to a complete account takeover is possible due to user-supplied data fields not being properly encoded and Javascript code being used to process the data. EPSS estimates a 1.25% chance of exploitation in the next 30 days.

Description

A flaw was found in keycloak in versions before 13.0.0. A Self Stored XSS attack vector escalating to a complete account takeover is possible due to user-supplied data fields not being properly encoded and Javascript code being used to process the data. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Metrics

CVSS 3.1
9.6/10

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

EPSS Probability
1.25%

65.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
RedhatKeycloak< 12.0.3

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-20195?
A flaw was found in keycloak in versions before 13.0.0. A Self Stored XSS attack vector escalating to a complete account takeover is possible due to user-supplied data fields not being properly encoded and Javascript code being used to process the data. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
How severe is CVE-2021-20195?
CVE-2021-20195 has a CVSS score of 9.6/10 (CRITICAL severity). The EPSS model estimates a 1.25% probability of exploitation in the next 30 days.
How do I fix CVE-2021-20195?
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-2021-20195?

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

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Source: NVD / NIST