CVE-2026-43350: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-xvvm-359f-6vgc
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CVSS 7.6
CWE-125
Published
Advisory Summary

CVE-2026-43350 is a HIGH (CVSS 7.6) security vulnerability vulnerability (CWE-125: Out-of-bounds Read) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product reads data past the end, or before the beginning, of the intended buffer.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-43350 at a Glance

CVE Identifier CVE-2026-43350
GHSA Identifier GHSA-xvvm-359f-6vgc
Severity HIGH
CVSS v3.1 Base Score 7.6
CWE Classification CWE-125: Out-of-bounds Read
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.6

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

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

How to Fix CVE-2026-43350

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-2026-43350, 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-125: Out-of-bounds Read, where the product reads data past the end, or before the beginning, of the intended buffer. 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: smb: client: require a full NFS mode SID before reading mode bits parse_dacl() treats an ACE SID matching sid_unix_NFS_mode as an NFS mode SID and reads sid.sub_auth[2] to recover the mode bits. That assumes the ACE carries three subauthorities, but compare_sids() only compares min(a, b) subauthorities. A malicious server can return an ACE with num_subauth = 2 and sub_auth[] = {88, 3}, which still matches sid_unix_NFS_mode and then drives the sub_auth[2] read four bytes past the end of the ACE. Require num_subauth >= 3 before treating the ACE as an NFS mode SID. This keeps the fix local to the special-SID mode path without changing compare_sids() semantics for the rest of cifsacl.

References

NVD — CVE-2026-43350 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-43350
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-784472.html
git.kernel.org/stable/c/1592a6cd6f... WEB
https://git.kernel.org/stable/c/1592a6cd6f653f2d24572a6976c7a775b19f4940
git.kernel.org/stable/c/23b54d6cc3... WEB
https://git.kernel.org/stable/c/23b54d6cc3ef30a51d984dc74364f24039ae2ecb
git.kernel.org/stable/c/2757ad3e4b... WEB
https://git.kernel.org/stable/c/2757ad3e4b6f9e0fed4c7739594e702abc5cab21
git.kernel.org/stable/c/38a69f08ee... WEB
https://git.kernel.org/stable/c/38a69f08ee82c450d3e4168707fff2e317dc3ff7
git.kernel.org/stable/c/8bd4cad3f4... WEB
https://git.kernel.org/stable/c/8bd4cad3f458d11650d51c2d24b03fb1770ae6cc
git.kernel.org/stable/c/b53b8e98c2... WEB
https://git.kernel.org/stable/c/b53b8e98c23310294fc45fc686db5ee860311896
git.kernel.org/stable/c/c8eef12af1... WEB
https://git.kernel.org/stable/c/c8eef12af1cc73031639ea7cf16e0b10e2536b0b
git.kernel.org/stable/c/f8488c07be... WEB
https://git.kernel.org/stable/c/f8488c07bea2431ee12a6067d736578064fa46b4

Frequently Asked Questions

What is CVE-2026-43350?
CVE-2026-43350 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-125: Out-of-bounds Read.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-43350?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-43350?
CVE-2026-43350 has a CVSS v3.1 base score of 7.6 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H.
What CWE is associated with CVE-2026-43350?
CVE-2026-43350 is classified under CWE-125: Out-of-bounds Read (The product reads data past the end, or before the beginning, of the intended buffer.).
How can I check Maven dependencies for CVE-2026-43350?
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 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-xvvm-359f-6vgc",
  "modified" : "2026-10-15T03:35:52Z",
  "published" : "2026-05-08T15:31:24Z",
  "aliases" : [ "CVE-2026-43350" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: require a full NFS mode SID before reading mode bits\n\nparse_dacl() treats an ACE SID matching sid_unix_NFS_mode as an NFS\nmode SID and reads sid.sub_auth[2] to recover the mode bits.\n\nThat assumes the ACE carries three subauthorities, but compare_sids()\nonly compares min(a, b) subauthorities.  A malicious server can return\nan ACE with num_subauth = 2 and sub_auth[] = {88, 3}, which still\nmatches sid_unix_NFS_mode and then drives the sub_auth[2] read four\nbytes past the end of the ACE.\n\nRequire num_subauth >= 3 before treating the ACE as an NFS mode SID.\nThis keeps the fix local to the special-SID mode path without changing\ncompare_sids() semantics for the rest of cifsacl.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-43350"
  }, {
    "type" : "WEB",
    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1592a6cd6f653f2d24572a6976c7a775b19f4940"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/23b54d6cc3ef30a51d984dc74364f24039ae2ecb"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2757ad3e4b6f9e0fed4c7739594e702abc5cab21"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/38a69f08ee82c450d3e4168707fff2e317dc3ff7"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8bd4cad3f458d11650d51c2d24b03fb1770ae6cc"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b53b8e98c23310294fc45fc686db5ee860311896"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c8eef12af1cc73031639ea7cf16e0b10e2536b0b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f8488c07bea2431ee12a6067d736578064fa46b4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-125" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-05-08T14:16:45Z"
  }
}