CVE-2026-101148: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-3m4x-3wq2-6jqf
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CVSS 10.0
CWE-73
Published
Advisory Summary

CVE-2026-101148 is a CRITICAL (CVSS 10.0) security vulnerability vulnerability (CWE-73: External Control of File Name or Path) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product allows user input to control or influence paths or file names that are used in filesystem operations.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-101148 at a Glance

CVE Identifier CVE-2026-101148
GHSA Identifier GHSA-3m4x-3wq2-6jqf
Severity CRITICAL
CVSS v3.1 Base Score 10.0
CWE Classification CWE-73: External Control of File Name or Path
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 10.0

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:N/S:C/C:H/I:H/A:H).

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

How to Fix CVE-2026-101148

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-2026-101148, 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-73: External Control of File Name or Path, where the product allows user input to control or influence paths or file names that are used in filesystem operations. 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

The BackupSheep WordPress Backup Plugin WordPress plugin through 1.8 does not properly validate its integration key, treating an unset or blank key as valid, which allows unauthenticated attackers to create and download full site backups, including the database with user password hashes, and to delete arbitrary files on the server, leading to sensitive data disclosure and site takeover. The BackupSheep WordPress Backup Plugin WordPress plugin through 1.8 has been closed on WordPress.org since July 2024 and no fixed version is available. Remove it from any site where it is installed.

References

NVD — CVE-2026-101148 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-101148
wpscan.com/vulnerability/5d6fc... WEB
https://wpscan.com/vulnerability/5d6fce13-34e3-4ec6-9b47-a78dd7c94fed

Frequently Asked Questions

What is CVE-2026-101148?
CVE-2026-101148 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-73: External Control of File Name or Path.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-101148?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-101148?
CVE-2026-101148 has a CVSS v3.1 base score of 10.0 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2026-101148?
CVE-2026-101148 is classified under CWE-73: External Control of File Name or Path (The product allows user input to control or influence paths or file names that are used in filesystem operations.).
How can I check Maven dependencies for CVE-2026-101148?
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-3m4x-3wq2-6jqf",
  "modified" : "2026-10-01T12:31:11Z",
  "published" : "2026-10-01T06:31:25Z",
  "aliases" : [ "CVE-2026-101148" ],
  "details" : "The BackupSheep WordPress Backup Plugin WordPress plugin through 1.8 does not properly validate its integration key, treating an unset or blank key as valid, which allows unauthenticated attackers to create and download full site backups, including the database with user password hashes, and to delete arbitrary files on the server, leading to sensitive data disclosure and site takeover.\n\nThe BackupSheep WordPress Backup Plugin WordPress plugin through 1.8 has been closed on WordPress.org since July 2024 and no fixed version is available. Remove it from any site where it is installed.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-101148"
  }, {
    "type" : "WEB",
    "url" : "https://wpscan.com/vulnerability/5d6fce13-34e3-4ec6-9b47-a78dd7c94fed"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-73" ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-01T06:17:04Z"
  }
}