Search for vulnerabilities
Vulnerability details: VCID-gyrk-cxkp-uyh8
Vulnerability ID VCID-gyrk-cxkp-uyh8
Aliases CVE-2021-3513
GHSA-xv7h-95r7-595j
Summary Incorrect implementation of lockout feature in Keycloak A flaw was found in keycloak where a brute force attack is possible even when the permanent lockout feature is enabled. This is due to a wrong error message displayed when wrong credentials are entered. The highest threat from this vulnerability is to confidentiality.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-209 Generation of Error Message Containing Sensitive Information
CWE-522 Insufficiently Protected Credentials
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3513.json
cvssv3.1 7.5 https://access.redhat.com/security/cve/CVE-2021-3513
generic_textual HIGH https://access.redhat.com/security/cve/CVE-2021-3513
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-3513
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-3513
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-3513
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-3513
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-3513
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-3513
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-3513
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-3513
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-3513
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-3513
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-3513
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-3513
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-3513
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-3513
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-3513
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-3513
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-3513
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-3513
epss 0.00174 https://api.first.org/data/v1/epss?cve=CVE-2021-3513
cvssv3.1 7.5 https://bugzilla.redhat.com/show_bug.cgi?id=1953439
generic_textual HIGH https://bugzilla.redhat.com/show_bug.cgi?id=1953439
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-xv7h-95r7-595j
cvssv3.1 7.5 https://github.com/keycloak/keycloak
generic_textual HIGH https://github.com/keycloak/keycloak
cvssv3.1 7.5 https://github.com/keycloak/keycloak/pull/7976
generic_textual HIGH https://github.com/keycloak/keycloak/pull/7976
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-3513
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2021-3513
archlinux High https://security.archlinux.org/AVG-1926
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3513.json
https://access.redhat.com/security/cve/CVE-2021-3513
https://api.first.org/data/v1/epss?cve=CVE-2021-3513
https://bugzilla.redhat.com/show_bug.cgi?id=1953439
https://github.com/keycloak/keycloak
https://github.com/keycloak/keycloak/pull/7976
https://nvd.nist.gov/vuln/detail/CVE-2021-3513
ASA-202105-6 https://security.archlinux.org/ASA-202105-6
AVG-1926 https://security.archlinux.org/AVG-1926
cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*
GHSA-xv7h-95r7-595j https://github.com/advisories/GHSA-xv7h-95r7-595j
RHSA-2021:3527 https://access.redhat.com/errata/RHSA-2021:3527
RHSA-2021:3528 https://access.redhat.com/errata/RHSA-2021:3528
RHSA-2021:3529 https://access.redhat.com/errata/RHSA-2021:3529
RHSA-2021:3534 https://access.redhat.com/errata/RHSA-2021:3534
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3513.json
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
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://access.redhat.com/security/cve/CVE-2021-3513
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
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://bugzilla.redhat.com/show_bug.cgi?id=1953439
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
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/keycloak/keycloak
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
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/keycloak/keycloak/pull/7976
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
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-3513
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
Exploit Prediction Scoring System (EPSS)
Percentile 0.39361
EPSS Score 0.00174
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T09:03:22.675327+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/08/GHSA-xv7h-95r7-595j/GHSA-xv7h-95r7-595j.json 37.0.0