CVE-2026-27379 HIGH

CVE-2026-27379: WordPress NextScripts plugin <= 4.4.7 - PHP Object Injection vulnerability

Vendor Nextscripts

Product NextScripts

Weakness CWE-502 · Unsafe deserialization

Published March 5, 2026

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

8.8/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction None

Confidentiality High

Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

Deserialization of Untrusted Data vulnerability in NextScripts NextScripts social-networks-auto-poster-facebook-twitter-g allows Object Injection.This issue affects NextScripts: from n/a through <= 4.4.7.

Explanation of Vulnerability in Simple Terms

02Summary

NextScripts versions 4.4.7 and earlier contain a deserialization vulnerability that allows authenticated users to execute arbitrary code on the site. An attacker with low-level access can craft malicious serialized data that, when processed by the application, runs their own PHP code with full site privileges. This affects confidentiality, integrity, and availability of the entire installation.

What an attacker can do

03Attacker Capabilities

Run arbitrary code on the site with full administrative privileges.

Potential impact on your site

04Site Impact

Complete site compromise: data theft, malware injection, user account takeover, or total site destruction.

Conditions required to exploit

05Prerequisites

Attacker must have a low-level user account (authenticated access required).

Key dates

06Disclosure timeline

March 5, 2026 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-27379 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/502.html AskarLabs — CWE-502 write-up Deserialization of Untrusted Data

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