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Vulnerability details: VCID-pqv8-9md7-ykg2
Vulnerability ID VCID-pqv8-9md7-ykg2
Aliases CVE-2019-3875
GHSA-38cg-gg9j-q9j9
Summary Improper Certificate Validation and Insufficient Verification of Data Authenticity in Keycloak A vulnerability was found in keycloak before 6.0.2. The X.509 authenticator supports the verification of client certificates through the CRL, where the CRL list can be obtained from the URL provided in the certificate itself (CDP) or through the separately configured path. The CRL are often available over the network through unsecured protocols ('http' or 'ldap') and hence the caller should verify the signature and possibly the certification path. Keycloak currently doesn't validate signatures on CRL, which can result in a possibility of various attacks like man-in-the-middle.
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-345 Insufficient Verification of Data Authenticity
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 6.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-3875.json
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2019-3875
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2019-3875
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2019-3875
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2019-3875
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2019-3875
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2019-3875
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2019-3875
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2019-3875
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2019-3875
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2019-3875
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2019-3875
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2019-3875
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2019-3875
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2019-3875
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2019-3875
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2019-3875
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2019-3875
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2019-3875
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2019-3875
cvssv3.1 4.8 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3875
generic_textual MODERATE https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3875
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-38cg-gg9j-q9j9
cvssv2 5.8 https://nvd.nist.gov/vuln/detail/CVE-2019-3875
cvssv3 4.8 https://nvd.nist.gov/vuln/detail/CVE-2019-3875
cvssv3.1 4.8 https://nvd.nist.gov/vuln/detail/CVE-2019-3875
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2019-3875
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-3875.json
https://api.first.org/data/v1/epss?cve=CVE-2019-3875
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3875
https://nvd.nist.gov/vuln/detail/CVE-2019-3875
http://www.securityfocus.com/bid/108748
1690628 https://bugzilla.redhat.com/show_bug.cgi?id=1690628
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:*:*:*:*:*:*:*:*
cpe:2.3:a:redhat:single_sign-on:7.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:redhat:single_sign-on:7.3:*:*:*:*:*:*:*
GHSA-38cg-gg9j-q9j9 https://github.com/advisories/GHSA-38cg-gg9j-q9j9
RHSA-2020:2067 https://access.redhat.com/errata/RHSA-2020:2067
RHSA-2020:2366 https://access.redhat.com/errata/RHSA-2020:2366
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-3875.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:H/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3875
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:M/Au:N/C:P/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-3875
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:H/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-3875
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:H/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-3875
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 0.14411
EPSS Score 0.00047
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:58:25.226928+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2019/06/GHSA-38cg-gg9j-q9j9/GHSA-38cg-gg9j-q9j9.json 37.0.0