CVE-2026-1047 is a stored Cross-Site Scripting (XSS) vulnerability identified in the goback2 salavat counter plugin for WordPress, affecting all versions up to and including 0.9.5. The vulnerability stems from improper neutralization of input during web page generation, specifically through the 'image_url' parameter. This parameter is insufficiently sanitized and escaped, allowing an authenticated attacker with administrator or higher privileges to inject arbitrary JavaScript code into pages generated by the plugin. When any user visits a page containing the injected script, the malicious code executes in their browser context. This can lead to a range of attacks including session hijacking, privilege escalation, or unauthorized actions performed on behalf of the victim user. The vulnerability requires the attacker to have high privileges (administrator or above) and does not require user interaction to trigger the payload once the malicious script is stored. The CVSS v3.1 base score is 4.4 (medium severity), reflecting the requirement for high privileges and the limited scope of impact (confidentiality and integrity impact are low, no availability impact). No public exploits have been reported yet, but the vulnerability is publicly disclosed and should be addressed promptly. The plugin is used within WordPress environments, which are common in many organizations for website and content management. The vulnerability is classified under CWE-79, indicating improper input neutralization leading to XSS. Given the nature of stored XSS, the risk includes persistent compromise of user sessions and potential lateral movement within affected web applications.

For European organizations, the impact of this vulnerability can be significant, particularly for those relying on WordPress sites with the vulnerable salavat counter plugin installed. An attacker with administrator access can inject malicious scripts that execute in the browsers of any user visiting the compromised pages, potentially leading to session hijacking, theft of sensitive information, or unauthorized actions performed with the victim's privileges. This can undermine user trust, lead to data breaches, and damage organizational reputation. Although exploitation requires administrator-level access, which limits the attack surface, insider threats or compromised admin accounts could be leveraged to exploit this vulnerability. The medium CVSS score reflects the moderate risk, but the persistent nature of stored XSS can facilitate ongoing exploitation if not remediated. European organizations with public-facing WordPress sites, especially those in sectors like e-commerce, government, and media, may face increased risks due to the potential for data exposure and service disruption. Additionally, compliance with GDPR requires organizations to protect user data, and exploitation of this vulnerability could lead to regulatory penalties if personal data is compromised.

To mitigate this vulnerability, European organizations should take several specific actions beyond generic advice: 1) Immediately audit WordPress installations to identify the presence of the goback2 salavat counter plugin and verify the version in use. 2) If a patched version becomes available, prioritize updating the plugin to the latest secure release. 3) In the absence of an official patch, consider disabling or removing the plugin to eliminate the attack vector. 4) Restrict administrator-level access strictly to trusted personnel and enforce strong authentication mechanisms such as multi-factor authentication (MFA) to reduce the risk of credential compromise. 5) Implement Web Application Firewalls (WAFs) with custom rules to detect and block suspicious payloads targeting the 'image_url' parameter. 6) Conduct regular security audits and monitoring for unusual activity or injected scripts within WordPress pages. 7) Educate administrators on secure input handling and the risks of stored XSS vulnerabilities. 8) Employ Content Security Policy (CSP) headers to limit the execution of unauthorized scripts in browsers. These targeted measures will reduce the likelihood of exploitation and limit the impact if an attack occurs.