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Vulnerability details: VCID-ra33-nmra-qkbx
Vulnerability ID VCID-ra33-nmra-qkbx
Aliases CVE-2017-12158
GHSA-v38p-mqq3-m6v5
Summary Keycloak Reflected XSS It was found that Keycloak would accept a HOST header URL in the admin console and use it to determine web resource locations. An attacker could use this flaw against an authenticated user to attain reflected XSS via a malicious server.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
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-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
System Score Found at
cvssv3.1 5.4 https://access.redhat.com/errata/RHSA-2017:2904
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2017:2904
cvssv3.1 5.4 https://access.redhat.com/errata/RHSA-2017:2905
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2017:2905
cvssv3.1 5.4 https://access.redhat.com/errata/RHSA-2017:2906
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2017:2906
cvssv3 5.4 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-12158.json
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2017-12158
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2017-12158
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2017-12158
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2017-12158
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2017-12158
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2017-12158
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2017-12158
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2017-12158
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2017-12158
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2017-12158
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2017-12158
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2017-12158
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2017-12158
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2017-12158
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2017-12158
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2017-12158
cvssv3.1 5.4 https://bugzilla.redhat.com/show_bug.cgi?id=1489161
generic_textual MODERATE https://bugzilla.redhat.com/show_bug.cgi?id=1489161
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-v38p-mqq3-m6v5
cvssv3.1 5.4 https://nvd.nist.gov/vuln/detail/CVE-2017-12158
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2017-12158
cvssv3.1 5.4 https://web.archive.org/web/20210124114020/http://www.securityfocus.com/bid/101618
generic_textual MODERATE https://web.archive.org/web/20210124114020/http://www.securityfocus.com/bid/101618
Reference id Reference type URL
https://access.redhat.com/errata/RHSA-2017:2904
https://access.redhat.com/errata/RHSA-2017:2905
https://access.redhat.com/errata/RHSA-2017:2906
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-12158.json
https://api.first.org/data/v1/epss?cve=CVE-2017-12158
https://bugzilla.redhat.com/show_bug.cgi?id=1489161
https://nvd.nist.gov/vuln/detail/CVE-2017-12158
https://web.archive.org/web/20210124114020/http://www.securityfocus.com/bid/101618
GHSA-v38p-mqq3-m6v5 https://github.com/advisories/GHSA-v38p-mqq3-m6v5
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://access.redhat.com/errata/RHSA-2017:2904
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:R/S:C/C:L/I:L/A:N Found at https://access.redhat.com/errata/RHSA-2017:2905
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:R/S:C/C:L/I:L/A:N Found at https://access.redhat.com/errata/RHSA-2017:2906
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:N/UI:R/S:U/C:L/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-12158.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:R/S:C/C:L/I:L/A:N Found at https://bugzilla.redhat.com/show_bug.cgi?id=1489161
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:R/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2017-12158
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:R/S:C/C:L/I:L/A:N Found at https://web.archive.org/web/20210124114020/http://www.securityfocus.com/bid/101618
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 0.70377
EPSS Score 0.00668
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T09:10:02.636719+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-v38p-mqq3-m6v5/GHSA-v38p-mqq3-m6v5.json 37.0.0