CVE-2026-43362: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-3mqh-w39c-q3pj
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CVSS 8.1
CWE-662 CWE-787
Published
Advisory Summary

CVE-2026-43362 is a HIGH (CVSS 8.1) security vulnerability vulnerability (CWE-662: Improper Synchronization) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product utilizes multiple threads, processes, components, or systems to allow temporary access to a shared resource that can only be exclusive to one process at a time, but it does not properly synchronize these actions, which might cause simultaneous accesses of this resource by multiple threads or processes.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-43362 at a Glance

CVE Identifier CVE-2026-43362
GHSA Identifier GHSA-3mqh-w39c-q3pj
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-662: Improper Synchronization
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.1

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:N/I:H/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 None (C:N)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-43362

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-2026-43362, 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-662: Improper Synchronization, where the product utilizes multiple threads, processes, components, or systems to allow temporary access to a shared resource that can only be exclusive to one process at a time, but it does not properly synchronize these actions, which might cause simultaneous accesses of this resource by multiple threads or processes. 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: fix in-place encryption corruption in SMB2_write() SMB2_write() places write payload in iov[1..n] as part of rq_iov. smb3_init_transform_rq() pointer-shares rq_iov, so crypt_message() encrypts iov[1] in-place, replacing the original plaintext with ciphertext. On a replayable error, the retry sends the same iov[1] which now contains ciphertext instead of the original data, resulting in corruption. The corruption is most likely to be observed when connections are unstable, as reconnects trigger write retries that re-send the already-encrypted data. This affects SFU mknod, MF symlinks, etc. On kernels before 6.10 (prior to the netfs conversion), sync writes also used this path and were similarly affected. The async write path wasn't unaffected as it uses rq_iter which gets deep-copied. Fix by moving the write payload into rq_iter via iov_iter_kvec(), so smb3_init_transform_rq() deep-copies it before encryption.

References

NVD — CVE-2026-43362 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-43362
git.kernel.org/stable/c/438e77435a... WEB
https://git.kernel.org/stable/c/438e77435aee2894d5edf90be5c87004a57f6258
git.kernel.org/stable/c/5232726822... WEB
https://git.kernel.org/stable/c/52327268224fb9ccc7ecfbbdfdfff54b6e93c518
git.kernel.org/stable/c/92e64f1852... WEB
https://git.kernel.org/stable/c/92e64f1852f455f57d0850989e57c30d7fac7d95
git.kernel.org/stable/c/aea5e37388... WEB
https://git.kernel.org/stable/c/aea5e37388a080361110ab5790f57ae0af383650
git.kernel.org/stable/c/d78840a6a3... WEB
https://git.kernel.org/stable/c/d78840a6a38d312dc1a51a65317bb67e46f0b929

Frequently Asked Questions

What is CVE-2026-43362?
CVE-2026-43362 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-662: Improper Synchronization.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-43362?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-43362?
CVE-2026-43362 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H.
What CWE is associated with CVE-2026-43362?
CVE-2026-43362 is classified under CWE-662: Improper Synchronization (The product utilizes multiple threads, processes, components, or systems to allow temporary access to a shared resource that can only be exclusive to one process at a time, but it does not properly synchronize these actions, which might cause simultaneous accesses of this resource by multiple threads or processes.).
How can I check Maven dependencies for CVE-2026-43362?
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-3mqh-w39c-q3pj",
  "modified" : "2026-05-11T09:30:30Z",
  "published" : "2026-05-08T15:31:25Z",
  "aliases" : [ "CVE-2026-43362" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix in-place encryption corruption in SMB2_write()\n\nSMB2_write() places write payload in iov[1..n] as part of rq_iov.\nsmb3_init_transform_rq() pointer-shares rq_iov, so crypt_message()\nencrypts iov[1] in-place, replacing the original plaintext with\nciphertext. On a replayable error, the retry sends the same iov[1]\nwhich now contains ciphertext instead of the original data,\nresulting in corruption.\n\nThe corruption is most likely to be observed when connections are\nunstable, as reconnects trigger write retries that re-send the\nalready-encrypted data.\n\nThis affects SFU mknod, MF symlinks, etc. On kernels before\n6.10 (prior to the netfs conversion), sync writes also used\nthis path and were similarly affected. The async write path\nwasn't unaffected as it uses rq_iter which gets deep-copied.\n\nFix by moving the write payload into rq_iter via iov_iter_kvec(),\nso smb3_init_transform_rq() deep-copies it before encryption.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-43362"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/438e77435aee2894d5edf90be5c87004a57f6258"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/52327268224fb9ccc7ecfbbdfdfff54b6e93c518"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/92e64f1852f455f57d0850989e57c30d7fac7d95"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/aea5e37388a080361110ab5790f57ae0af383650"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d78840a6a38d312dc1a51a65317bb67e46f0b929"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-662", "CWE-787" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-05-08T15:16:47Z"
  }
}