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Vulnerability details: VCID-jmtd-5xd3-f3hb
Vulnerability ID VCID-jmtd-5xd3-f3hb
Aliases CVE-2023-4918
GHSA-5q66-v53q-pm35
Summary Keycloak vulnerable to Plaintext Storage of User Password A flaw was discovered in Keycloak Core package. When a user registers itself through registration flow, the "password" and "password-confirm" field from the form will occur as regular attributes in the users attributes. The password is also created, but the user attributes must not be there. This way, any entities (all users and clients with proper rights/roles) are able to retrieve the users passwords in clear-text. ### Impact Passwords for self-registered users are stored as cleartext attributes associated with the user. ### Mitigation Disable self-registration for users in all realms until patched.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-256 Plaintext Storage of a Password
CWE-319 Cleartext Transmission of Sensitive Information
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 8.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-4918.json
cvssv3.1 8.8 https://access.redhat.com/security/cve/CVE-2023-4918
generic_textual HIGH https://access.redhat.com/security/cve/CVE-2023-4918
ssvc Track https://access.redhat.com/security/cve/CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2023-4918
cvssv3.1 8.8 https://bugzilla.redhat.com/show_bug.cgi?id=2238588
generic_textual HIGH https://bugzilla.redhat.com/show_bug.cgi?id=2238588
ssvc Track https://bugzilla.redhat.com/show_bug.cgi?id=2238588
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-5q66-v53q-pm35
cvssv3.1 8.8 https://github.com/keycloak/keycloak
generic_textual HIGH https://github.com/keycloak/keycloak
cvssv3.1 8.8 https://github.com/keycloak/keycloak/security/advisories/GHSA-5q66-v53q-pm35
cvssv3.1_qr HIGH https://github.com/keycloak/keycloak/security/advisories/GHSA-5q66-v53q-pm35
generic_textual HIGH https://github.com/keycloak/keycloak/security/advisories/GHSA-5q66-v53q-pm35
ssvc Track https://github.com/keycloak/keycloak/security/advisories/GHSA-5q66-v53q-pm35
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2023-4918
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2023-4918
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-4918.json
https://access.redhat.com/security/cve/CVE-2023-4918
https://api.first.org/data/v1/epss?cve=CVE-2023-4918
https://bugzilla.redhat.com/show_bug.cgi?id=2238588
https://github.com/keycloak/keycloak
https://github.com/keycloak/keycloak/security/advisories/GHSA-5q66-v53q-pm35
https://nvd.nist.gov/vuln/detail/CVE-2023-4918
cpe:2.3:a:redhat:keycloak:22.0.2:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:redhat:keycloak:22.0.2:*:*:*:*:*:*:*
cpe:/a:redhat:red_hat_single_sign_on:7 https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/a:redhat:red_hat_single_sign_on:7
GHSA-5q66-v53q-pm35 https://github.com/advisories/GHSA-5q66-v53q-pm35
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-4918.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:L/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/security/cve/CVE-2023-4918
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: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2024-09-25T19:53:12Z/ Found at https://access.redhat.com/security/cve/CVE-2023-4918
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://bugzilla.redhat.com/show_bug.cgi?id=2238588
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: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2024-09-25T19:53:12Z/ Found at https://bugzilla.redhat.com/show_bug.cgi?id=2238588
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H 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:L/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/keycloak/keycloak/security/advisories/GHSA-5q66-v53q-pm35
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: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2024-09-25T19:53:12Z/ Found at https://github.com/keycloak/keycloak/security/advisories/GHSA-5q66-v53q-pm35
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2023-4918
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 0.24732
EPSS Score 0.00081
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:41:10.794823+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/09/GHSA-5q66-v53q-pm35/GHSA-5q66-v53q-pm35.json 37.0.0