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Vulnerability details: VCID-arz8-9ngd-2yce
Vulnerability ID VCID-arz8-9ngd-2yce
Aliases CVE-2018-10894
GHSA-xvv8-8wh9-9fh2
Summary Keycloak Authentication Error It was found that SAML authentication in Keycloak 3.4.3.Final incorrectly authenticated expired certificates. A malicious user could use this to access unauthorized data or possibly conduct further attacks.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-295 Improper Certificate Validation
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
CWE-345 Insufficient Verification of Data Authenticity
System Score Found at
cvssv3.1 5.4 https://access.redhat.com/errata/RHSA-2018:3592
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2018:3592
cvssv3.1 5.4 https://access.redhat.com/errata/RHSA-2018:3593
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2018:3593
cvssv3.1 5.4 https://access.redhat.com/errata/RHSA-2018:3595
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2018:3595
cvssv3.1 5.4 https://access.redhat.com/errata/RHSA-2019:0877
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2019:0877
cvssv3 5.4 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-10894.json
epss 0.00054 https://api.first.org/data/v1/epss?cve=CVE-2018-10894
epss 0.00054 https://api.first.org/data/v1/epss?cve=CVE-2018-10894
epss 0.00054 https://api.first.org/data/v1/epss?cve=CVE-2018-10894
epss 0.00054 https://api.first.org/data/v1/epss?cve=CVE-2018-10894
epss 0.00054 https://api.first.org/data/v1/epss?cve=CVE-2018-10894
epss 0.00054 https://api.first.org/data/v1/epss?cve=CVE-2018-10894
epss 0.00054 https://api.first.org/data/v1/epss?cve=CVE-2018-10894
epss 0.00054 https://api.first.org/data/v1/epss?cve=CVE-2018-10894
epss 0.00054 https://api.first.org/data/v1/epss?cve=CVE-2018-10894
epss 0.00054 https://api.first.org/data/v1/epss?cve=CVE-2018-10894
epss 0.00054 https://api.first.org/data/v1/epss?cve=CVE-2018-10894
epss 0.00054 https://api.first.org/data/v1/epss?cve=CVE-2018-10894
epss 0.00054 https://api.first.org/data/v1/epss?cve=CVE-2018-10894
epss 0.00054 https://api.first.org/data/v1/epss?cve=CVE-2018-10894
epss 0.00054 https://api.first.org/data/v1/epss?cve=CVE-2018-10894
epss 0.00054 https://api.first.org/data/v1/epss?cve=CVE-2018-10894
epss 0.00054 https://api.first.org/data/v1/epss?cve=CVE-2018-10894
epss 0.00054 https://api.first.org/data/v1/epss?cve=CVE-2018-10894
epss 0.00054 https://api.first.org/data/v1/epss?cve=CVE-2018-10894
cvssv3.1 5.4 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10894
generic_textual MODERATE https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10894
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-xvv8-8wh9-9fh2
cvssv3.1 5.4 https://github.com/keycloak/keycloak
generic_textual MODERATE https://github.com/keycloak/keycloak
cvssv3.1 5.4 https://github.com/keycloak/keycloak/commit/812e76c39b1e693e8f11e5549cca2c90631f372e
generic_textual MODERATE https://github.com/keycloak/keycloak/commit/812e76c39b1e693e8f11e5549cca2c90631f372e
cvssv2 5.5 https://nvd.nist.gov/vuln/detail/CVE-2018-10894
cvssv3 5.4 https://nvd.nist.gov/vuln/detail/CVE-2018-10894
cvssv3.1 5.4 https://nvd.nist.gov/vuln/detail/CVE-2018-10894
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2018-10894
Reference id Reference type URL
https://access.redhat.com/errata/RHSA-2018:3592
https://access.redhat.com/errata/RHSA-2018:3593
https://access.redhat.com/errata/RHSA-2018:3595
https://access.redhat.com/errata/RHSA-2019:0877
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-10894.json
https://api.first.org/data/v1/epss?cve=CVE-2018-10894
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10894
https://github.com/keycloak/keycloak
https://github.com/keycloak/keycloak/commit/812e76c39b1e693e8f11e5549cca2c90631f372e
https://nvd.nist.gov/vuln/detail/CVE-2018-10894
1599434 https://bugzilla.redhat.com/show_bug.cgi?id=1599434
cpe:2.3:a:redhat:keycloak:3.4.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:redhat:keycloak:3.4.3:*:*:*:*:*:*:*
GHSA-xvv8-8wh9-9fh2 https://github.com/advisories/GHSA-xvv8-8wh9-9fh2
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Found at https://access.redhat.com/errata/RHSA-2018:3592
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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Found at https://access.redhat.com/errata/RHSA-2018:3593
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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Found at https://access.redhat.com/errata/RHSA-2018:3595
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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Found at https://access.redhat.com/errata/RHSA-2019:0877
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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-10894.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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Found at https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10894
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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Found at https://github.com/keycloak/keycloak/commit/812e76c39b1e693e8f11e5549cca2c90631f372e
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: AV:N/AC:L/Au:S/C:P/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-10894
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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-10894
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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-10894
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 0.17096
EPSS Score 0.00054
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T09:09:42.575356+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-xvv8-8wh9-9fh2/GHSA-xvv8-8wh9-9fh2.json 37.0.0