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Vulnerability details: VCID-r3yw-bq52-67e9
Vulnerability ID VCID-r3yw-bq52-67e9
Aliases CVE-2021-3461
GHSA-cm29-6wx7-p874
Summary keycloak: Backchannel logout not working when Principal Type is set to Attribute Name for external SAML IDP
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-613 Insufficient Session Expiration
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 7.1 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3461.json
epss 0.00052 https://api.first.org/data/v1/epss?cve=CVE-2021-3461
cvssv3.1 7.1 https://bugzilla.redhat.com/show_bug.cgi?id=1941565
generic_textual HIGH https://bugzilla.redhat.com/show_bug.cgi?id=1941565
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-cm29-6wx7-p874
cvssv3.1 7.1 https://github.com/keycloak/keycloak/issues/11203
generic_textual HIGH https://github.com/keycloak/keycloak/issues/11203
cvssv3.1 7.1 https://nvd.nist.gov/vuln/detail/CVE-2021-3461
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2021-3461
archlinux Low https://security.archlinux.org/AVG-1994
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3461.json
https://api.first.org/data/v1/epss?cve=CVE-2021-3461
https://github.com/keycloak/keycloak/issues/11203
https://nvd.nist.gov/vuln/detail/CVE-2021-3461
1941565 https://bugzilla.redhat.com/show_bug.cgi?id=1941565
ASA-202106-19 https://security.archlinux.org/ASA-202106-19
AVG-1994 https://security.archlinux.org/AVG-1994
GHSA-cm29-6wx7-p874 https://github.com/advisories/GHSA-cm29-6wx7-p874
RHSA-2021:2063 https://access.redhat.com/errata/RHSA-2021:2063
RHSA-2021:2064 https://access.redhat.com/errata/RHSA-2021:2064
RHSA-2021:2065 https://access.redhat.com/errata/RHSA-2021:2065
RHSA-2021:2070 https://access.redhat.com/errata/RHSA-2021:2070
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3461.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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://bugzilla.redhat.com/show_bug.cgi?id=1941565
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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://github.com/keycloak/keycloak/issues/11203
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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-3461
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 0.16486
EPSS Score 0.00052
Published At May 29, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-05-29T09:17:17.308584+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3461.json 38.6.0