CVE-2026-66152: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-m35m-jcr7-2pvw
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CVSS 8.8
CWE-29
Published
Advisory Summary

CVE-2026-66152 is a HIGH (CVSS 8.8) security vulnerability vulnerability (CWE-29: Path Traversal: '\..\filename') affecting Software libraries in the Maven ecosystem. The weakness occurs when the product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '\..\filename' (leading backslash dot dot) sequences that can resolve to a location that is outside of that directory.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-66152 at a Glance

CVE Identifier CVE-2026-66152
GHSA Identifier GHSA-m35m-jcr7-2pvw
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-29: Path Traversal: '\..\filename'
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:N/AC:L/PR:N/UI:R/S:U/C:H/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 High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-66152

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-2026-66152, 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-29: Path Traversal: '\..\filename', where the product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '\..\filename' (leading backslash dot dot) sequences that can resolve to a location that is outside of that directory. 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

A Path traversal vulnerability in OPSWAT tarball in the SonicWall NetExtender Linux client allows an attacker to write arbitrary file as root.

References

NVD — CVE-2026-66152 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-66152
psirt.global.sonicwall.com/vuln-detail/snwlid-... WEB
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0013

Frequently Asked Questions

What is CVE-2026-66152?
CVE-2026-66152 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-29: Path Traversal: '\..\filename'.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-66152?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-66152?
CVE-2026-66152 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-66152?
CVE-2026-66152 is classified under CWE-29: Path Traversal: '\..\filename' (The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '\..\filename' (leading backslash dot dot) sequences that can resolve to a location that is outside of that directory.).
How can I check Maven dependencies for CVE-2026-66152?
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-m35m-jcr7-2pvw",
  "modified" : "2026-08-27T06:31:24Z",
  "published" : "2026-08-25T21:31:30Z",
  "aliases" : [ "CVE-2026-66152" ],
  "details" : "A Path traversal vulnerability in OPSWAT tarball in the SonicWall NetExtender Linux client allows an attacker to write arbitrary file as root.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-66152"
  }, {
    "type" : "WEB",
    "url" : "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0013"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-29" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-25T20:17:01Z"
  }
}