CVE-2026-81779

10.0

Silk Themes · Newspapers X

A critical input validation vulnerability in the Silk Themes Newspapers X WordPress theme allows for the installation of malicious software.

Executive summary

The Newspapers X theme for WordPress contains a critical input validation vulnerability that enables unauthenticated attackers to implant malicious software.

Vulnerability

This vulnerability (CWE-1284) involves the improper validation of input quantity, which can be leveraged by an unauthenticated remote attacker to achieve remote code execution through the installation of a malicious payload.

Business impact

The exploit allows full system compromise, granting an attacker the ability to execute arbitrary commands, manipulate data, or maintain persistence within the WordPress environment. Given the CVSS score of 10.0, this flaw poses an extreme risk to business operations, potentially leading to total loss of site integrity, data exfiltration, and significant reputational damage.

Remediation

Immediate Action: Update the Newspapers X theme to version 1.0.49 or the latest available release immediately to patch the validation flaw.

Proactive Monitoring: Review web server and WordPress application logs for unusual POST requests or unauthorized file creation attempts occurring in the theme directory.

Compensating Controls: Deploy a Web Application Firewall (WAF) with rules configured to block suspicious input patterns or unauthorized file upload attempts targeting theme directories.

Exploitation status

Public Exploit Available: Unknown

Analyst recommendation

Due to the critical severity of this vulnerability and the potential for complete system compromise, administrators must prioritize updating the affected theme immediately. Failure to apply the vendor-provided patch leaves the WordPress installation exposed to unauthenticated remote attackers who may attempt to deploy persistent backdoors.

Sources

Originally found and disclosed by ashv4ni | Patchstack Bug Bounty Program, per the CVE Program record.