Is CVE-2021-20195 in the CISA KEV catalog?

No. CVE-2021-20195 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-20195?

CVE-2021-20195 has a CVSS v3 base score of 9.6 (CRITICAL).

What is the EPSS score for CVE-2021-20195?

CVE-2021-20195 has an EPSS score of 1.25% (66th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-20195?

Upgrade keycloak to 12.0.3 or later.

CVE & CISA-KEV Catalog

CVE-2021-20195

CRITICAL

9.6

CVSS v3

NVD

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.

CWE-20Improper Input Validation CWE-116

How to fix

Remediation Available

keycloakNVD

Affected:< 12.0.3Fixed in:12.0.3CVE-2021-20195derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.25%probability of exploitation in 30 days

66thpercentile

Moderate risk: more likely to be exploited than 66% of all known CVEs.

References

Vendor Advisory1

bugzilla.redhat.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.