CVE-2026-43334: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-3ggx-x2j4-gfqr
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CVSS 8.8
CWE-863
Published
Advisory Summary

CVE-2026-43334 is a HIGH (CVSS 8.8) security vulnerability vulnerability (CWE-863: Incorrect Authorization) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-43334 at a Glance

CVE Identifier CVE-2026-43334
GHSA Identifier GHSA-3ggx-x2j4-gfqr
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-863: Incorrect Authorization
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Adjacent (AV:A)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-43334

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-43334, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SMP: force responder MITM requirements before building the pairing response smp_cmd_pairing_req() currently builds the pairing response from the initiator auth_req before enforcing the local BT_SECURITY_HIGH requirement. If the initiator omits SMP_AUTH_MITM, the response can also omit it even though the local side still requires MITM. tk_request() then sees an auth value without SMP_AUTH_MITM and may select JUST_CFM, making method selection inconsistent with the pairing policy the responder already enforces. When the local side requires HIGH security, first verify that MITM can be achieved from the IO capabilities and then force SMP_AUTH_MITM in the response in both rsp.auth_req and auth. This keeps the responder auth bits and later method selection aligned.

References

NVD — CVE-2026-43334 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-43334
git.kernel.org/stable/c/01bb4045d2... WEB
https://git.kernel.org/stable/c/01bb4045d2306c266178f49ce0c3576d237a3040
git.kernel.org/stable/c/425a22c537... WEB
https://git.kernel.org/stable/c/425a22c5373d4e1b46492ab869074ebeeade61f3
git.kernel.org/stable/c/7ab69426e7... WEB
https://git.kernel.org/stable/c/7ab69426e7ecbd18a222ee2ec87ca612d30197d7
git.kernel.org/stable/c/91649c02c1... WEB
https://git.kernel.org/stable/c/91649c02c1baaa18cedf7fb425fa1f0f852c8183
git.kernel.org/stable/c/c8ff0ca650... WEB
https://git.kernel.org/stable/c/c8ff0ca6508535bccabd81c5c9dcc63de8a3d4fb
git.kernel.org/stable/c/d05111bfe3... WEB
https://git.kernel.org/stable/c/d05111bfe37bfd8bd4d2dfe6675d6bdeef43f7c7
git.kernel.org/stable/c/ec17efb1ef... WEB
https://git.kernel.org/stable/c/ec17efb1ef91506cfd17a77692eaf4bbacb520ea
git.kernel.org/stable/c/fa14e0e198... WEB
https://git.kernel.org/stable/c/fa14e0e19820b1bbdb42185c9c4efa950bcffef9

Frequently Asked Questions

What is CVE-2026-43334?
CVE-2026-43334 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-863: Incorrect Authorization.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-43334?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-43334?
CVE-2026-43334 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-43334?
CVE-2026-43334 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).
How can I check Maven dependencies for CVE-2026-43334?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
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  "schema_version" : "1.4.0",
  "id" : "GHSA-3ggx-x2j4-gfqr",
  "modified" : "2026-05-11T09:30:30Z",
  "published" : "2026-05-08T15:31:24Z",
  "aliases" : [ "CVE-2026-43334" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: SMP: force responder MITM requirements before building the pairing response\n\nsmp_cmd_pairing_req() currently builds the pairing response from the\ninitiator auth_req before enforcing the local BT_SECURITY_HIGH\nrequirement. If the initiator omits SMP_AUTH_MITM, the response can\nalso omit it even though the local side still requires MITM.\n\ntk_request() then sees an auth value without SMP_AUTH_MITM and may\nselect JUST_CFM, making method selection inconsistent with the pairing\npolicy the responder already enforces.\n\nWhen the local side requires HIGH security, first verify that MITM can\nbe achieved from the IO capabilities and then force SMP_AUTH_MITM in the\nresponse in both rsp.auth_req and auth. This keeps the responder auth bits\nand later method selection aligned.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-43334"
  }, {
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    "url" : "https://git.kernel.org/stable/c/01bb4045d2306c266178f49ce0c3576d237a3040"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/425a22c5373d4e1b46492ab869074ebeeade61f3"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7ab69426e7ecbd18a222ee2ec87ca612d30197d7"
  }, {
    "type" : "WEB",
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ec17efb1ef91506cfd17a77692eaf4bbacb520ea"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fa14e0e19820b1bbdb42185c9c4efa950bcffef9"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-05-08T14:16:43Z"
  }
}