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Vulnerability details: VCID-ubns-dvvn-3kej
Vulnerability ID VCID-ubns-dvvn-3kej
Aliases CVE-2022-4137
GHSA-9hhc-pj4w-w5rv
GMS-2023-616
Summary Keycloak Cross-site Scripting on OpenID connect login service A reflected cross-site scripting (XSS) vulnerability was found in the `oob` OAuth endpoint due to incorrect null-byte handling. This issue allows a malicious link to insert an arbitrary URI into a Keycloak error page.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (5)
CWE-116 Improper Encoding or Escaping of Output
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-81 Improper Neutralization of Script in an Error Message Web Page
System Score Found at
cvssv3.1 8.1 https://access.redhat.com/errata/RHSA-2023:1043
generic_textual HIGH https://access.redhat.com/errata/RHSA-2023:1043
cvssv3.1 8.1 https://access.redhat.com/errata/RHSA-2023:1044
generic_textual HIGH https://access.redhat.com/errata/RHSA-2023:1044
cvssv3.1 8.1 https://access.redhat.com/errata/RHSA-2023:1045
generic_textual HIGH https://access.redhat.com/errata/RHSA-2023:1045
cvssv3.1 8.1 https://access.redhat.com/errata/RHSA-2023:1049
generic_textual HIGH https://access.redhat.com/errata/RHSA-2023:1049
cvssv3 8.1 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2022-4137.json
cvssv3.1 8.1 https://access.redhat.com/security/cve/CVE-2022-4137
generic_textual HIGH https://access.redhat.com/security/cve/CVE-2022-4137
epss 0.00194 https://api.first.org/data/v1/epss?cve=CVE-2022-4137
epss 0.00194 https://api.first.org/data/v1/epss?cve=CVE-2022-4137
epss 0.00194 https://api.first.org/data/v1/epss?cve=CVE-2022-4137
epss 0.00393 https://api.first.org/data/v1/epss?cve=CVE-2022-4137
epss 0.00393 https://api.first.org/data/v1/epss?cve=CVE-2022-4137
epss 0.00393 https://api.first.org/data/v1/epss?cve=CVE-2022-4137
epss 0.00393 https://api.first.org/data/v1/epss?cve=CVE-2022-4137
epss 0.00393 https://api.first.org/data/v1/epss?cve=CVE-2022-4137
epss 0.00393 https://api.first.org/data/v1/epss?cve=CVE-2022-4137
epss 0.00393 https://api.first.org/data/v1/epss?cve=CVE-2022-4137
epss 0.00393 https://api.first.org/data/v1/epss?cve=CVE-2022-4137
epss 0.00393 https://api.first.org/data/v1/epss?cve=CVE-2022-4137
epss 0.00393 https://api.first.org/data/v1/epss?cve=CVE-2022-4137
epss 0.00393 https://api.first.org/data/v1/epss?cve=CVE-2022-4137
epss 0.00393 https://api.first.org/data/v1/epss?cve=CVE-2022-4137
epss 0.00393 https://api.first.org/data/v1/epss?cve=CVE-2022-4137
epss 0.00393 https://api.first.org/data/v1/epss?cve=CVE-2022-4137
cvssv3.1 8.1 https://bugzilla.redhat.com/show_bug.cgi?id=2148496
generic_textual HIGH https://bugzilla.redhat.com/show_bug.cgi?id=2148496
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-9hhc-pj4w-w5rv
cvssv3.1 8.1 https://github.com/keycloak/keycloak
generic_textual HIGH https://github.com/keycloak/keycloak
cvssv3.1 8.1 https://github.com/keycloak/keycloak/commit/30d0e9d22dae51392e5a3748a1c68c116667359a
generic_textual HIGH https://github.com/keycloak/keycloak/commit/30d0e9d22dae51392e5a3748a1c68c116667359a
cvssv3.1 8.1 https://github.com/keycloak/keycloak/pull/16774
generic_textual HIGH https://github.com/keycloak/keycloak/pull/16774
cvssv3.1 8.1 https://github.com/keycloak/keycloak/security/advisories/GHSA-9hhc-pj4w-w5rv
cvssv3.1_qr HIGH https://github.com/keycloak/keycloak/security/advisories/GHSA-9hhc-pj4w-w5rv
generic_textual HIGH https://github.com/keycloak/keycloak/security/advisories/GHSA-9hhc-pj4w-w5rv
cvssv3.1 6.1 https://nvd.nist.gov/vuln/detail/CVE-2022-4137
cvssv3.1 8.1 https://nvd.nist.gov/vuln/detail/CVE-2022-4137
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2022-4137
Reference id Reference type URL
https://access.redhat.com/errata/RHSA-2023:1043
https://access.redhat.com/errata/RHSA-2023:1044
https://access.redhat.com/errata/RHSA-2023:1045
https://access.redhat.com/errata/RHSA-2023:1049
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2022-4137.json
https://access.redhat.com/security/cve/CVE-2022-4137
https://api.first.org/data/v1/epss?cve=CVE-2022-4137
https://bugzilla.redhat.com/show_bug.cgi?id=2148496
https://github.com/keycloak/keycloak
https://github.com/keycloak/keycloak/commit/30d0e9d22dae51392e5a3748a1c68c116667359a
https://github.com/keycloak/keycloak/pull/16774
https://github.com/keycloak/keycloak/security/advisories/GHSA-9hhc-pj4w-w5rv
https://nvd.nist.gov/vuln/detail/CVE-2022-4137
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-9hhc-pj4w-w5rv https://github.com/advisories/GHSA-9hhc-pj4w-w5rv
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://access.redhat.com/errata/RHSA-2023:1043
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

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unchanged

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://access.redhat.com/errata/RHSA-2023:1044
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

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://access.redhat.com/errata/RHSA-2023:1045
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

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required

unchanged

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high

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none

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none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://access.redhat.com/errata/RHSA-2023:1049
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

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none

low

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unchanged

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Vector: CVSS:3.1/AV:N/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-2022-4137.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

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none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://access.redhat.com/security/cve/CVE-2022-4137
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

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high

low

none

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low

none

high

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none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Found at https://bugzilla.redhat.com/show_bug.cgi?id=2148496
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:R/S:U/C:H/I:H/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:R/S:U/C:H/I:H/A:N Found at https://github.com/keycloak/keycloak/commit/30d0e9d22dae51392e5a3748a1c68c116667359a
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:R/S:U/C:H/I:H/A:N Found at https://github.com/keycloak/keycloak/pull/16774
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:R/S:U/C:H/I:H/A:N Found at https://github.com/keycloak/keycloak/security/advisories/GHSA-9hhc-pj4w-w5rv
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:R/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2022-4137
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:R/S:U/C:H/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2022-4137
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

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low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.41887
EPSS Score 0.00194
Published At Aug. 1, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:43:27.979229+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/03/GHSA-9hhc-pj4w-w5rv/GHSA-9hhc-pj4w-w5rv.json 37.0.0