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Vulnerability details: VCID-67wr-x944-37g9
Vulnerability ID VCID-67wr-x944-37g9
Aliases CVE-2023-0657
GHSA-7fpj-9hr8-28vh
Summary Keycloak vulnerable to impersonation via logout token exchange Keycloak was found to not properly enforce token types when validating signatures locally. An authenticated attacker could use this flaw to exchange a logout token for an access token and possibly gain access to data outside of enforced permissions.
Status Published
Exploitability 0.5
Weighted Severity 3.1
Risk 1.6
Affected and Fixed Packages Package Details
Weaknesses (7)
CWE-273 Improper Check for Dropped Privileges
CWE-284 Improper Access Control
CWE-287 Improper Authentication
CWE-290 Authentication Bypass by Spoofing
CWE-347 Improper Verification of Cryptographic Signature
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3.1 3.4 https://access.redhat.com/errata/RHSA-2024:1867
generic_textual LOW https://access.redhat.com/errata/RHSA-2024:1867
ssvc Track https://access.redhat.com/errata/RHSA-2024:1867
cvssv3.1 3.4 https://access.redhat.com/errata/RHSA-2024:1868
generic_textual LOW https://access.redhat.com/errata/RHSA-2024:1868
ssvc Track https://access.redhat.com/errata/RHSA-2024:1868
cvssv3 3.4 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-0657.json
cvssv3.1 3.4 https://access.redhat.com/security/cve/CVE-2023-0657
generic_textual LOW https://access.redhat.com/security/cve/CVE-2023-0657
ssvc Track https://access.redhat.com/security/cve/CVE-2023-0657
epss 0.0006 https://api.first.org/data/v1/epss?cve=CVE-2023-0657
epss 0.0006 https://api.first.org/data/v1/epss?cve=CVE-2023-0657
epss 0.0006 https://api.first.org/data/v1/epss?cve=CVE-2023-0657
epss 0.0006 https://api.first.org/data/v1/epss?cve=CVE-2023-0657
epss 0.00061 https://api.first.org/data/v1/epss?cve=CVE-2023-0657
epss 0.00061 https://api.first.org/data/v1/epss?cve=CVE-2023-0657
epss 0.00061 https://api.first.org/data/v1/epss?cve=CVE-2023-0657
epss 0.00061 https://api.first.org/data/v1/epss?cve=CVE-2023-0657
epss 0.00061 https://api.first.org/data/v1/epss?cve=CVE-2023-0657
epss 0.00061 https://api.first.org/data/v1/epss?cve=CVE-2023-0657
epss 0.00061 https://api.first.org/data/v1/epss?cve=CVE-2023-0657
epss 0.00061 https://api.first.org/data/v1/epss?cve=CVE-2023-0657
epss 0.00061 https://api.first.org/data/v1/epss?cve=CVE-2023-0657
epss 0.00061 https://api.first.org/data/v1/epss?cve=CVE-2023-0657
epss 0.00063 https://api.first.org/data/v1/epss?cve=CVE-2023-0657
epss 0.00063 https://api.first.org/data/v1/epss?cve=CVE-2023-0657
epss 0.00063 https://api.first.org/data/v1/epss?cve=CVE-2023-0657
epss 0.00063 https://api.first.org/data/v1/epss?cve=CVE-2023-0657
epss 0.00063 https://api.first.org/data/v1/epss?cve=CVE-2023-0657
cvssv3.1 3.4 https://bugzilla.redhat.com/show_bug.cgi?id=2166728
generic_textual LOW https://bugzilla.redhat.com/show_bug.cgi?id=2166728
ssvc Track https://bugzilla.redhat.com/show_bug.cgi?id=2166728
cvssv3.1_qr LOW https://github.com/advisories/GHSA-7fpj-9hr8-28vh
cvssv3.1 3.4 https://github.com/keycloak/keycloak
generic_textual LOW https://github.com/keycloak/keycloak
cvssv3.1 3.4 https://github.com/keycloak/keycloak/security/advisories/GHSA-7fpj-9hr8-28vh
cvssv3.1_qr LOW https://github.com/keycloak/keycloak/security/advisories/GHSA-7fpj-9hr8-28vh
generic_textual LOW https://github.com/keycloak/keycloak/security/advisories/GHSA-7fpj-9hr8-28vh
cvssv3.1 3.4 https://nvd.nist.gov/vuln/detail/CVE-2023-0657
generic_textual LOW https://nvd.nist.gov/vuln/detail/CVE-2023-0657
Reference id Reference type URL
https://access.redhat.com/errata/RHSA-2024:1867
https://access.redhat.com/errata/RHSA-2024:1868
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-0657.json
https://access.redhat.com/security/cve/CVE-2023-0657
https://api.first.org/data/v1/epss?cve=CVE-2023-0657
https://bugzilla.redhat.com/show_bug.cgi?id=2166728
https://github.com/keycloak/keycloak
https://github.com/keycloak/keycloak/security/advisories/GHSA-7fpj-9hr8-28vh
https://nvd.nist.gov/vuln/detail/CVE-2023-0657
cpe:/a:redhat:build_keycloak:22 https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/a:redhat:build_keycloak:22
cpe:/a:redhat:build_keycloak:22::el9 https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/a:redhat:build_keycloak:22::el9
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-7fpj-9hr8-28vh https://github.com/advisories/GHSA-7fpj-9hr8-28vh
No exploits are available.
Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N Found at https://access.redhat.com/errata/RHSA-2024:1867
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:P/P:M/B:A/M:M/D:T/2024-11-17T16:18:32Z/ Found at https://access.redhat.com/errata/RHSA-2024:1867
Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N Found at https://access.redhat.com/errata/RHSA-2024:1868
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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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-11-17T16:18:32Z/ Found at https://access.redhat.com/errata/RHSA-2024:1868
Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-0657.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:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N Found at https://access.redhat.com/security/cve/CVE-2023-0657
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: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-11-17T16:18:32Z/ Found at https://access.redhat.com/security/cve/CVE-2023-0657
Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N Found at https://bugzilla.redhat.com/show_bug.cgi?id=2166728
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:P/P:M/B:A/M:M/D:T/2024-11-17T16:18:32Z/ Found at https://bugzilla.redhat.com/show_bug.cgi?id=2166728
Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:R/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:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N Found at https://github.com/keycloak/keycloak/security/advisories/GHSA-7fpj-9hr8-28vh
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:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2023-0657
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 0.19192
EPSS Score 0.0006
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:30:39.868677+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/04/GHSA-7fpj-9hr8-28vh/GHSA-7fpj-9hr8-28vh.json 37.0.0