Vulnerability · Published May 28, 2021 · Assigned by redhat

CVE-2021-20195

Critical 9.6

In plain English

A critical-severity improper input validation in keycloak. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 70% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)9.6Critical

Exploit odds (30 days)1.2%top 30.5% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Maven	org.keycloak:keycloak-core	13.0.0	GHSA-q6w2-89hq-hq27

Affected products (as reported)

Vendor	Product	Versions
n/a	keycloak	keycloak 13.0.0

Weakness: CWE-20

References

https://bugzilla.redhat.com/show_bug.cgi?id=1919143 x_refsource_MISC