CWE-287
DiscouragedImproper Authentication
Abstraction: Class · Status: Draft
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
5996 vulnerabilities reference this CWE, most recent first.
GHSA-2894-QCQF-G23G
Vulnerability from github – Published: 2023-10-03 06:30 – Updated: 2023-10-04 19:34Versions of the package asyncua before 0.9.96 are vulnerable to Improper Authentication such that it is possible to access Address Space without encryption and authentication.
Note:
This issue is a result of missing checks for services that require an active session.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "asyncua"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.9.96"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-26150"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": true,
"github_reviewed_at": "2023-10-04T14:13:24Z",
"nvd_published_at": "2023-10-03T05:15:49Z",
"severity": "HIGH"
},
"details": "Versions of the package asyncua before 0.9.96 are vulnerable to Improper Authentication such that it is possible to access Address Space without encryption and authentication.\n\n**Note:**\n\nThis issue is a result of missing checks for services that require an active session.",
"id": "GHSA-2894-qcqf-g23g",
"modified": "2023-10-04T19:34:34Z",
"published": "2023-10-03T06:30:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26150"
},
{
"type": "WEB",
"url": "https://github.com/FreeOpcUa/opcua-asyncio/issues/1014"
},
{
"type": "WEB",
"url": "https://github.com/FreeOpcUa/opcua-asyncio/pull/1015"
},
{
"type": "WEB",
"url": "https://github.com/FreeOpcUa/opcua-asyncio/commit/2be7ce80df05de8d6c6ae1ebce6fa2bb7147844a"
},
{
"type": "WEB",
"url": "https://github.com/FreeOpcUa/opcua-asyncio/commit/b4106dfd5037423c9d1810b48a97296b59cde513"
},
{
"type": "WEB",
"url": "https://gist.github.com/artfire52/84f7279a4119d6f90381ac49d7121121"
},
{
"type": "PACKAGE",
"url": "https://github.com/FreeOpcUa/opcua-asyncio"
},
{
"type": "WEB",
"url": "https://github.com/FreeOpcUa/opcua-asyncio/releases/tag/v0.9.96"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/asyncua/PYSEC-2023-189.yaml"
},
{
"type": "WEB",
"url": "https://security.snyk.io/vuln/SNYK-PYTHON-ASYNCUA-5673435"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "asyncua Improper Authentication vulnerability"
}
GHSA-28C6-247X-R9MW
Vulnerability from github – Published: 2022-06-22 00:00 – Updated: 2022-06-30 00:00A vulnerability has been identified in SIMATIC WinCC OA V3.16 (All versions in default configuration), SIMATIC WinCC OA V3.17 (All versions in non-default configuration), SIMATIC WinCC OA V3.18 (All versions in non-default configuration). Affected applications use client-side only authentication, when neither server-side authentication (SSA) nor Kerberos authentication is enabled. In this configuration, attackers could impersonate other users or exploit the client-server protocol without being authenticated.
{
"affected": [],
"aliases": [
"CVE-2022-33139"
],
"database_specific": {
"cwe_ids": [
"CWE-287",
"CWE-603"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-06-21T13:15:00Z",
"severity": "CRITICAL"
},
"details": "A vulnerability has been identified in SIMATIC WinCC OA V3.16 (All versions in default configuration), SIMATIC WinCC OA V3.17 (All versions in non-default configuration), SIMATIC WinCC OA V3.18 (All versions in non-default configuration). Affected applications use client-side only authentication, when neither server-side authentication (SSA) nor Kerberos authentication is enabled. In this configuration, attackers could impersonate other users or exploit the client-server protocol without being authenticated.",
"id": "GHSA-28c6-247x-r9mw",
"modified": "2022-06-30T00:00:40Z",
"published": "2022-06-22T00:00:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-33139"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-111512.pdf"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-836027.pdf"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-28CQ-6RMX-PJQ4
Vulnerability from github – Published: 2022-05-17 01:38 – Updated: 2022-07-12 21:37The HTTP Digest Access Authentication implementation in Apache Tomcat 5.5.x before 5.5.36, 6.x before 6.0.36, and 7.x before 7.0.30 does not properly check for stale nonce values in conjunction with enforcement of proper credentials, which makes it easier for remote attackers to bypass intended access restrictions by sniffing the network for valid requests.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat"
},
"ranges": [
{
"events": [
{
"introduced": "5.5.0"
},
{
"fixed": "5.5.36"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat"
},
"ranges": [
{
"events": [
{
"introduced": "6.0.0"
},
{
"fixed": "6.0.36"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat"
},
"ranges": [
{
"events": [
{
"introduced": "7.0.0"
},
{
"fixed": "7.0.30"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2012-5887"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": true,
"github_reviewed_at": "2022-07-12T21:37:02Z",
"nvd_published_at": "2012-11-17T19:55:00Z",
"severity": "MODERATE"
},
"details": "The HTTP Digest Access Authentication implementation in Apache Tomcat 5.5.x before 5.5.36, 6.x before 6.0.36, and 7.x before 7.0.30 does not properly check for stale nonce values in conjunction with enforcement of proper credentials, which makes it easier for remote attackers to bypass intended access restrictions by sniffing the network for valid requests.",
"id": "GHSA-28cq-6rmx-pjq4",
"modified": "2022-07-12T21:37:02Z",
"published": "2022-05-17T01:38:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2012-5887"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/79809"
},
{
"type": "PACKAGE",
"url": "https://github.com/apache/tomcat"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-updates/2012-12/msg00089.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-updates/2012-12/msg00090.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-updates/2013-01/msg00037.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2013-0623.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2013-0629.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2013-0631.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2013-0632.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2013-0640.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2013-0647.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2013-0648.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2013-0726.html"
},
{
"type": "WEB",
"url": "http://svn.apache.org/viewvc?view=revision\u0026revision=1377807"
},
{
"type": "WEB",
"url": "http://svn.apache.org/viewvc?view=revision\u0026revision=1380829"
},
{
"type": "WEB",
"url": "http://svn.apache.org/viewvc?view=revision\u0026revision=1392248"
},
{
"type": "WEB",
"url": "http://tomcat.apache.org/security-5.html"
},
{
"type": "WEB",
"url": "http://tomcat.apache.org/security-6.html"
},
{
"type": "WEB",
"url": "http://tomcat.apache.org/security-7.html"
},
{
"type": "WEB",
"url": "http://www-01.ibm.com/support/docview.wss?uid=swg21626891"
},
{
"type": "WEB",
"url": "http://www.ubuntu.com/usn/USN-1637-1"
}
],
"schema_version": "1.4.0",
"severity": [],
"summary": "Improper Authentication in Apache Tomcat"
}
GHSA-28FJ-C9JC-XPP3
Vulnerability from github – Published: 2026-07-17 15:32 – Updated: 2026-07-17 15:32A vulnerability was determined in poco-ai poco-claw up to 0.5.4. This vulnerability affects the function create_task of the file executor_manager/app/api/v1/tasks.py of the component executor_manager API. Executing a manipulation can lead to missing authentication. The exploit has been publicly disclosed and may be utilized. Upgrading to version 0.5.7 is able to resolve this issue. This patch is called 67fcc88505c57f77d3fcf04eb5b89425b10cbf48. It is recommended to upgrade the affected component.
{
"affected": [],
"aliases": [
"CVE-2026-16015"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-17T14:17:21Z",
"severity": "LOW"
},
"details": "A vulnerability was determined in poco-ai poco-claw up to 0.5.4. This vulnerability affects the function create_task of the file executor_manager/app/api/v1/tasks.py of the component executor_manager API. Executing a manipulation can lead to missing authentication. The exploit has been publicly disclosed and may be utilized. Upgrading to version 0.5.7 is able to resolve this issue. This patch is called 67fcc88505c57f77d3fcf04eb5b89425b10cbf48. It is recommended to upgrade the affected component.",
"id": "GHSA-28fj-c9jc-xpp3",
"modified": "2026-07-17T15:32:31Z",
"published": "2026-07-17T15:32:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-16015"
},
{
"type": "WEB",
"url": "https://github.com/poco-ai/poco-claw/issues/136"
},
{
"type": "WEB",
"url": "https://github.com/poco-ai/poco-claw/issues/137"
},
{
"type": "WEB",
"url": "https://github.com/poco-ai/poco-claw/pull/135"
},
{
"type": "WEB",
"url": "https://github.com/poco-ai/poco-claw/commit/67fcc88505c57f77d3fcf04eb5b89425b10cbf48"
},
{
"type": "WEB",
"url": "https://github.com/poco-ai/poco-claw"
},
{
"type": "WEB",
"url": "https://github.com/poco-ai/poco-claw/releases/tag/0.5.7"
},
{
"type": "WEB",
"url": "https://vuldb.com/cve/CVE-2026-16015"
},
{
"type": "WEB",
"url": "https://vuldb.com/submit/856812"
},
{
"type": "WEB",
"url": "https://vuldb.com/submit/856813"
},
{
"type": "WEB",
"url": "https://vuldb.com/submit/856815"
},
{
"type": "WEB",
"url": "https://vuldb.com/submit/856816"
},
{
"type": "WEB",
"url": "https://vuldb.com/vuln/379757"
},
{
"type": "WEB",
"url": "https://vuldb.com/vuln/379757/cti"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-28R9-4273-PM3W
Vulnerability from github – Published: 2022-05-14 01:36 – Updated: 2022-05-14 01:36An insecure transport protocol used by Drobo Dashboard API on Drobo 5N2 NAS version 4.0.5-13.28.96115 allows attackers to intercept network traffic.
{
"affected": [],
"aliases": [
"CVE-2018-14708"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-12-03T22:29:00Z",
"severity": "CRITICAL"
},
"details": "An insecure transport protocol used by Drobo Dashboard API on Drobo 5N2 NAS version 4.0.5-13.28.96115 allows attackers to intercept network traffic.",
"id": "GHSA-28r9-4273-pm3w",
"modified": "2022-05-14T01:36:41Z",
"published": "2022-05-14T01:36:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-14708"
},
{
"type": "WEB",
"url": "https://blog.securityevaluators.com/call-me-a-doctor-new-vulnerabilities-in-drobo5n2-4f1d885df7fc"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-28W3-369M-84X8
Vulnerability from github – Published: 2022-05-02 06:13 – Updated: 2022-05-02 06:13admin.htm in Geo++ GNCASTER 1.4.0.7 and earlier does not properly enforce HTTP Digest Authentication, which allows remote authenticated users to use HTTP Basic Authentication, bypassing intended server policy.
{
"affected": [],
"aliases": [
"CVE-2010-0550"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2010-02-04T20:15:00Z",
"severity": "MODERATE"
},
"details": "admin.htm in Geo++ GNCASTER 1.4.0.7 and earlier does not properly enforce HTTP Digest Authentication, which allows remote authenticated users to use HTTP Basic Authentication, bypassing intended server policy.",
"id": "GHSA-28w3-369m-84x8",
"modified": "2022-05-02T06:13:47Z",
"published": "2022-05-02T06:13:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2010-0550"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/55976"
},
{
"type": "WEB",
"url": "http://osvdb.org/62013"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/38323"
},
{
"type": "WEB",
"url": "http://www.redteam-pentesting.de/en/advisories/rt-sa-2010-003/-geo-r-gncaster-faulty-implementation-of-http-digest-authentication"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/archive/1/509199/100/0/threaded"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-28WX-779M-F4HF
Vulnerability from github – Published: 2022-05-17 01:38 – Updated: 2022-05-17 01:38Samsung Kies Air 2.1.207051 and 2.1.210161 relies on the IP address for authentication, which allows remote man-in-the-middle attackers to read arbitrary phone contents by spoofing or controlling the IP address.
{
"affected": [],
"aliases": [
"CVE-2012-5858"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2012-12-03T21:55:00Z",
"severity": "MODERATE"
},
"details": "Samsung Kies Air 2.1.207051 and 2.1.210161 relies on the IP address for authentication, which allows remote man-in-the-middle attackers to read arbitrary phone contents by spoofing or controlling the IP address.",
"id": "GHSA-28wx-779m-f4hf",
"modified": "2022-05-17T01:38:31Z",
"published": "2022-05-17T01:38:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2012-5858"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/80092"
},
{
"type": "WEB",
"url": "http://archives.neohapsis.com/archives/bugtraq/2012-11/0061.html"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.org/files/118154/Kies-Air-Denial-Of-Service-Authorization-Bypass.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/56560"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-28X6-9X2P-P6MQ
Vulnerability from github – Published: 2022-05-02 03:31 – Updated: 2022-05-02 03:31Microsoft Internet Explorer 8, and possibly other versions, detects http content in https web pages only when the top-level frame uses https, which allows man-in-the-middle attackers to execute arbitrary web script, in an https site's context, by modifying an http page to include an https iframe that references a script file on an http site, related to "HTTP-Intended-but-HTTPS-Loadable (HPIHSL) pages."
{
"affected": [],
"aliases": [
"CVE-2009-2064"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2009-06-15T19:30:00Z",
"severity": "MODERATE"
},
"details": "Microsoft Internet Explorer 8, and possibly other versions, detects http content in https web pages only when the top-level frame uses https, which allows man-in-the-middle attackers to execute arbitrary web script, in an https site\u0027s context, by modifying an http page to include an https iframe that references a script file on an http site, related to \"HTTP-Intended-but-HTTPS-Loadable (HPIHSL) pages.\"",
"id": "GHSA-28x6-9x2p-p6mq",
"modified": "2022-05-02T03:31:16Z",
"published": "2022-05-02T03:31:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2009-2064"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/51186"
},
{
"type": "WEB",
"url": "http://research.microsoft.com/apps/pubs/default.aspx?id=79323"
},
{
"type": "WEB",
"url": "http://research.microsoft.com/pubs/79323/pbp-final-with-update.pdf"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/35403"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-28XQ-93RR-JP78
Vulnerability from github – Published: 2022-05-14 01:33 – Updated: 2022-05-14 01:33EMC NetWorker 8.2.1.x and 8.2.2.x before 8.2.2.6 and 9.x before 9.0.0.6 mishandles authentication, which allows remote attackers to execute arbitrary commands by leveraging access to a different NetWorker instance.
{
"affected": [],
"aliases": [
"CVE-2016-0916"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2016-06-10T01:59:00Z",
"severity": "CRITICAL"
},
"details": "EMC NetWorker 8.2.1.x and 8.2.2.x before 8.2.2.6 and 9.x before 9.0.0.6 mishandles authentication, which allows remote attackers to execute arbitrary commands by leveraging access to a different NetWorker instance.",
"id": "GHSA-28xq-93rr-jp78",
"modified": "2022-05-14T01:33:06Z",
"published": "2022-05-14T01:33:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-0916"
},
{
"type": "WEB",
"url": "http://seclists.org/bugtraq/2016/Jun/43"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1036075"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-293Q-567P-WMWQ
Vulnerability from github – Published: 2026-06-10 00:31 – Updated: 2026-06-30 21:35In Spring Security Web, SubjectDnX509PrincipalExtractor does not correctly handle certain malformed X.509 certificate CN values, which can lead to reading the wrong value for the username. In a carefully crafted certificate, this can lead to an attacker impersonating another user.
SubjectDnX509PrincipalExtractor is deprecated by this CVE and replaced with SubjectX500PrincipalExtractor. As part of updating, you should also migrate to SubjectX500PrincipalExtractor.
Affected versions: Spring Security Enterprise 5.7.0 through 5.7.24; 5.8.0 through 5.8.26; 6.3.0 through 6.3.17; 6.4.0 through 6.4.17; 6.5.0 through 6.5.10. OSS 6.5.0 through 6.5.10.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 6.5.10"
},
"package": {
"ecosystem": "Maven",
"name": "org.springframework.security:spring-security-web"
},
"ranges": [
{
"events": [
{
"introduced": "6.5.0"
},
{
"fixed": "6.5.11"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.springframework.security:spring-security-web"
},
"ranges": [
{
"events": [
{
"introduced": "6.4.0"
},
{
"last_affected": "6.4.13"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.springframework.security:spring-security-web"
},
"ranges": [
{
"events": [
{
"introduced": "6.0.0"
},
{
"last_affected": "6.3.10"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.springframework.security:spring-security-web"
},
"ranges": [
{
"events": [
{
"introduced": "5.8.0"
},
{
"last_affected": "5.8.16"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.springframework.security:spring-security-web"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.7.14"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-47838"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": true,
"github_reviewed_at": "2026-06-30T21:35:09Z",
"nvd_published_at": "2026-06-10T00:16:54Z",
"severity": "MODERATE"
},
"details": "In Spring Security Web, `SubjectDnX509PrincipalExtractor` does not correctly handle certain malformed X.509 certificate CN values, which can lead to reading the wrong value for the username. In a carefully crafted certificate, this can lead to an attacker impersonating another user.\n\n`SubjectDnX509PrincipalExtractor` is deprecated by this CVE and replaced with `SubjectX500PrincipalExtractor`. As part of updating, you should also migrate to `SubjectX500PrincipalExtractor`.\n\nAffected versions:\nSpring Security Enterprise 5.7.0 through 5.7.24; 5.8.0 through 5.8.26; 6.3.0 through 6.3.17; 6.4.0 through 6.4.17; 6.5.0 through 6.5.10. \nOSS 6.5.0 through 6.5.10.",
"id": "GHSA-293q-567p-wmwq",
"modified": "2026-06-30T21:35:09Z",
"published": "2026-06-10T00:31:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-47838"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-2jrg-rf5x-568g"
},
{
"type": "WEB",
"url": "https://spring.io/security/cve-2026-47838"
},
{
"type": "PACKAGE",
"url": "spring-projects/spring-security"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "Spring Security Vulnerable to Unauthorized User Impersonation when Using X.509 Client Certificates"
}
Mitigation
Strategy: Libraries or Frameworks
Use an authentication framework or library such as the OWASP ESAPI Authentication feature.
CAPEC-114: Authentication Abuse
An attacker obtains unauthorized access to an application, service or device either through knowledge of the inherent weaknesses of an authentication mechanism, or by exploiting a flaw in the authentication scheme's implementation. In such an attack an authentication mechanism is functioning but a carefully controlled sequence of events causes the mechanism to grant access to the attacker.
CAPEC-115: Authentication Bypass
An attacker gains access to application, service, or device with the privileges of an authorized or privileged user by evading or circumventing an authentication mechanism. The attacker is therefore able to access protected data without authentication ever having taken place.
CAPEC-151: Identity Spoofing
Identity Spoofing refers to the action of assuming (i.e., taking on) the identity of some other entity (human or non-human) and then using that identity to accomplish a goal. An adversary may craft messages that appear to come from a different principle or use stolen / spoofed authentication credentials.
CAPEC-194: Fake the Source of Data
An adversary takes advantage of improper authentication to provide data or services under a falsified identity. The purpose of using the falsified identity may be to prevent traceability of the provided data or to assume the rights granted to another individual. One of the simplest forms of this attack would be the creation of an email message with a modified "From" field in order to appear that the message was sent from someone other than the actual sender. The root of the attack (in this case the email system) fails to properly authenticate the source and this results in the reader incorrectly performing the instructed action. Results of the attack vary depending on the details of the attack, but common results include privilege escalation, obfuscation of other attacks, and data corruption/manipulation.
CAPEC-22: Exploiting Trust in Client
An attack of this type exploits vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by communicating directly with the server where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
CAPEC-57: Utilizing REST's Trust in the System Resource to Obtain Sensitive Data
This attack utilizes a REST(REpresentational State Transfer)-style applications' trust in the system resources and environment to obtain sensitive data once SSL is terminated.
CAPEC-593: Session Hijacking
This type of attack involves an adversary that exploits weaknesses in an application's use of sessions in performing authentication. The adversary is able to steal or manipulate an active session and use it to gain unathorized access to the application.
CAPEC-633: Token Impersonation
An adversary exploits a weakness in authentication to create an access token (or equivalent) that impersonates a different entity, and then associates a process/thread to that that impersonated token. This action causes a downstream user to make a decision or take action that is based on the assumed identity, and not the response that blocks the adversary.
CAPEC-650: Upload a Web Shell to a Web Server
By exploiting insufficient permissions, it is possible to upload a web shell to a web server in such a way that it can be executed remotely. This shell can have various capabilities, thereby acting as a "gateway" to the underlying web server. The shell might execute at the higher permission level of the web server, providing the ability the execute malicious code at elevated levels.
CAPEC-94: Adversary in the Middle (AiTM)
An adversary targets the communication between two components (typically client and server), in order to alter or obtain data from transactions. A general approach entails the adversary placing themself within the communication channel between the two components.