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Advisory details: gitlab / maven/org.keycloak/keycloak-core/CVE-2021-20195
Advisory ID gitlab/maven/org.keycloak/keycloak-core/CVE-2021-20195
Aliases CVE-2021-20195
Summary Improper Input Validation A flaw was found in keycloak 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.
Status Published
Exploitability 0.5
Weighted Severity 0.0
Risk
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (3)
CWE-116 Improper Encoding or Escaping of Output
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv2 https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.keycloak/keycloak-core/CVE-2021-20195.yml
cvssv3.1 https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.keycloak/keycloak-core/CVE-2021-20195.yml
Reference id Reference type URL
https://bugzilla.redhat.com/show_bug.cgi?id=1919143
CVE-2021-20195 https://nvd.nist.gov/vuln/detail/CVE-2021-20195
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P Found at https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.keycloak/keycloak-core/CVE-2021-20195.yml
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H Found at https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.keycloak/keycloak-core/CVE-2021-20195.yml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.