CVE-2026-2589 is a vulnerability classified under CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) affecting the Greenshift – animation and page builder blocks plugin for WordPress. All versions up to and including 12.8.3 are vulnerable due to the plugin’s automated Settings Backup mechanism, which stores backup files containing sensitive configuration data in locations accessible without authentication. These backup files expose API keys for multiple third-party services, including OpenAI, Claude, Google Maps, Gemini, DeepSeek, and Cloudflare Turnstile. Because these files are publicly accessible, any unauthenticated attacker can retrieve them simply by knowing or discovering the backup file URL. The vulnerability has a CVSS 3.1 base score of 5.3, indicating medium severity, with an attack vector of network (remote), low attack complexity, no privileges required, and no user interaction needed. The impact is primarily confidentiality loss, as attackers can misuse the exposed API keys to access or manipulate third-party services, potentially leading to further data leakage, service abuse, or financial costs. No integrity or availability impacts are directly associated with this vulnerability. No patches are currently linked, so mitigation relies on restricting access to backup files and monitoring API key usage. The vulnerability was publicly disclosed in March 2026, with no known exploits in the wild at the time of publication.

The primary impact of this vulnerability is the unauthorized disclosure of sensitive API keys, which can lead to several downstream risks. Attackers gaining access to OpenAI or Claude API keys could generate malicious content or abuse AI services, potentially incurring financial charges or reputational damage. Exposure of Google Maps API keys might allow attackers to exploit quota limits or manipulate map data usage. Similarly, compromised Cloudflare Turnstile keys could undermine anti-bot protections. The leakage of these keys could also facilitate further attacks against the affected organization’s infrastructure or customers by enabling attackers to pivot through third-party services. Organizations relying on Greenshift for website animation and page building may face increased risk of data leakage and service abuse. While the vulnerability does not directly affect website integrity or availability, the indirect consequences of API key misuse can be significant, including financial loss, service disruption, and reputational harm. The lack of authentication or user interaction requirements makes exploitation straightforward for remote attackers, increasing the risk profile.

Organizations should immediately audit their web servers hosting Greenshift plugin backups to identify and restrict public access to automated Settings Backup files. Implementing strict access controls such as HTTP authentication or IP whitelisting for backup directories can prevent unauthorized retrieval. If possible, disable the automated backup feature until a secure patch or update is released. Rotate all exposed API keys immediately upon discovery of compromise to prevent unauthorized use. Monitor API usage logs from OpenAI, Claude, Google Maps, Gemini, DeepSeek, and Cloudflare Turnstile for suspicious activity indicative of abuse. Employ web application firewalls (WAFs) to detect and block attempts to access backup files. Stay informed about official patches or updates from the plugin vendor and apply them promptly once available. Additionally, consider isolating API keys with minimal privileges and usage restrictions to limit the impact of potential exposure. Regularly review plugin configurations and file permissions to ensure sensitive data is not inadvertently exposed.