CVE-2026-93798: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-9c2v-whhq-6g24
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CVSS 7.8
Published
Advisory Summary

CVE-2026-93798 is a HIGH (CVSS 7.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-93798 at a Glance

CVE Identifier CVE-2026-93798
GHSA Identifier GHSA-9c2v-whhq-6g24
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.8

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

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
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-2026-93798

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-2026-93798, 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 General Security Weakness. 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: btrfs: fix reloc root cleanup in merge_reloc_roots() If the root we got has zero root refs in its root item, we are resetting the root's ->reloc_root without using barriers like we do everywhere else. Sashiko complained about this while reviewing another patch, and it's correct (see the Link tag below). Also, we should not clear BTRFS_ROOT_DEAD_RELOC_TREE from the root unless the root points to the reloc root we have. Fix this by using clear_reloc_root(), which issues the memory barrier after setting the root's ->reloc_root to NULL and before clearing the bit BTRFS_ROOT_DEAD_RELOC_TREE from the root.

References

NVD — CVE-2026-93798 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-93798
git.kernel.org/stable/c/0bc25f0a2d... WEB
https://git.kernel.org/stable/c/0bc25f0a2d1b3e0a691431c4d7aef36afcd527c5
git.kernel.org/stable/c/29531470b1... WEB
https://git.kernel.org/stable/c/29531470b1bf1e8bd2df4941fe913106edbca615
git.kernel.org/stable/c/415f8665a9... WEB
https://git.kernel.org/stable/c/415f8665a969d3c906e4fd7c90fcbb4b357886f6
git.kernel.org/stable/c/63d6b1f04c... WEB
https://git.kernel.org/stable/c/63d6b1f04cd91c825329712aa526215ffa5d11ca
git.kernel.org/stable/c/ab48583aa9... WEB
https://git.kernel.org/stable/c/ab48583aa9948205ff9a6470e23dbff74c565e24
git.kernel.org/stable/c/b78fe9563e... WEB
https://git.kernel.org/stable/c/b78fe9563e2d5ae47805f1e5dc722c91fd30e1f8
git.kernel.org/stable/c/ee695a968a... WEB
https://git.kernel.org/stable/c/ee695a968aa73b1e67ccbf2133dc0e54381d32b2

Frequently Asked Questions

What is CVE-2026-93798?
CVE-2026-93798 is a security vulnerability in Software classified as a security vulnerability vulnerability under General Security Weakness.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-93798?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-93798?
CVE-2026-93798 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-93798?
CVE-2026-93798 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-93798?
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-9c2v-whhq-6g24",
  "modified" : "2026-10-03T12:31:09Z",
  "published" : "2026-09-24T18:31:29Z",
  "aliases" : [ "CVE-2026-93798" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix reloc root cleanup in merge_reloc_roots()\n\nIf the root we got has zero root refs in its root item, we are resetting\nthe root's ->reloc_root without using barriers like we do everywhere else.\nSashiko complained about this while reviewing another patch, and it's\ncorrect (see the Link tag below).\n\nAlso, we should not clear BTRFS_ROOT_DEAD_RELOC_TREE from the root unless\nthe root points to the reloc root we have.\n\nFix this by using clear_reloc_root(), which issues the memory barrier\nafter setting the root's ->reloc_root to NULL and before clearing the bit\nBTRFS_ROOT_DEAD_RELOC_TREE from the root.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-93798"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0bc25f0a2d1b3e0a691431c4d7aef36afcd527c5"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/29531470b1bf1e8bd2df4941fe913106edbca615"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/415f8665a969d3c906e4fd7c90fcbb4b357886f6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/63d6b1f04cd91c825329712aa526215ffa5d11ca"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ab48583aa9948205ff9a6470e23dbff74c565e24"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b78fe9563e2d5ae47805f1e5dc722c91fd30e1f8"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ee695a968aa73b1e67ccbf2133dc0e54381d32b2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-24T17:17:12Z"
  }
}