CVE-2026-39802

Received Received - Intake

Unauthenticated Remote Code Execution in Everest Backup

Publication date: 2026-10-10

Last updated on: 2026-10-10

Assigner: Patchstack

Description

Unauthenticated Remote Code Execution (RCE) in Everest Backup <= 2.3.13 versions.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-10-10

Last Modified

2026-10-10

Generated

2026-10-11

AI Q&A

2026-10-11

EPSS Evaluated

N/A

NVD

CVE-2026-39802

EUVD

EUVD-2026-96535

Affected Vendors & Products

Vendor	Product	Version / Range
everestthemes	Everest	Backup n/a

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-94	The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Attack-Flow Graph

Executive Summary

This is an Unauthenticated Remote Code Execution (RCE) vulnerability in the Everest Backup WordPress plugin versions 2.3.13 and below. It allows attackers to remotely execute arbitrary commands on the server without authentication, posing a severe security risk.

Detection Guidance

Check if the Everest Backup plugin version 2.3.13 or below is installed on your WordPress site. Look for unusual server activity or unauthorized command execution attempts. Patchstack provides automated mitigation rules to detect exploitation attempts.

Impact Analysis

An attacker could exploit this to take full control of your server, steal sensitive data, install malware, or disrupt services. The high CVSS score (8.1) indicates a critical threat likely to be targeted in mass attacks.

Compliance Impact

This RCE vulnerability could lead to data breaches, violating GDPR and HIPAA requirements for data protection and confidentiality. Organizations may face legal penalties, fines, and reputational damage if exploited.

Mitigation Strategies

Disable the Everest Backup plugin immediately if installed. Apply Patchstack's temporary mitigation rule to block attacks. Contact your hosting provider or developer for further assistance. Avoid using unpatched versions until an official fix is released.

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