Attack Vectors

The vulnerability CVE-2026-27379 affects the WordPress plugin NextScripts: Social Networks Auto-Poster (slug: social-networks-auto-poster-facebook-twitter-g) in versions up to and including 4.4.7. It is rated High severity (CVSS 7.5).

The primary attack path requires an attacker to have authenticated access to your WordPress site at the Contributor role or higher. In practical business terms, this includes scenarios such as compromised employee credentials, a malicious insider, or an overly permissive user/agency account. Once logged in, the attacker can attempt to pass untrusted input that triggers unsafe deserialization, enabling PHP Object Injection.

Because the CVSS vector indicates no user interaction is required (UI:N), the risk is more about who has access than whether someone clicks a link. This makes account hygiene, role permissions, and third-party access management central to reducing exposure.

Security Weakness

This issue stems from deserialization of untrusted input within NextScripts: Social Networks Auto-Poster, allowing PHP Object Injection in affected versions (<= 4.4.7). The weakness is especially concerning because object injection can become far more damaging depending on what other components are present on the site.

Per the published details, there is no known POP chain included in the vulnerable software itself. However, the risk can escalate if a POP chain exists through another plugin or theme installed on the same WordPress environment. In other words: even if this plugin alone does not provide the “final step” to a full compromise, it can act as the entry point when combined with other site code.

At the time of publication, there is no known patch available. This shifts the decision from routine patch management to a risk-tolerance and mitigation conversation that business leadership and compliance teams should be involved in.

Technical or Business Impacts

If exploited in an environment where a usable POP chain is available via other installed code, impacts could include retrieving sensitive data, deleting arbitrary files, or executing code. For many organizations, that translates into high-consequence outcomes such as site takeover, data exposure, and prolonged service disruption.

From a business-risk perspective, this can affect brand trust (defaced pages, malicious redirects), revenue (downtime during campaigns, lead capture disruption), and compliance exposure (potential disclosure obligations depending on what data is accessible through the WordPress instance). CFO and COO stakeholders should weigh the operational cost of emergency response against proactive mitigation or replacement.

Since there is no known patch, the most risk-reducing option may be to uninstall NextScripts: Social Networks Auto-Poster and replace it with an alternative that meets current security expectations. If removal is not immediately feasible, prioritize mitigations such as tightening WordPress roles (especially Contributor access), reviewing all authenticated accounts (including vendors and agencies), and increasing monitoring and alerting for suspicious admin/editor actions.

Similar Attacks

PHP Object Injection and unsafe deserialization issues have been repeatedly leveraged in real-world WordPress compromises, especially when attackers can chain vulnerabilities across plugins and themes. Examples include:

Elementor Pro: Unserialize / PHP Object Injection vulnerability (Wordfence coverage)

WooCommerce: unauthenticated object injection (WPScan vulnerability record)