CVE-2026-93885 blackworks1 CVE debrief

Who should care

Defenders responsible for WordPress installations using the Cryptocurrency Donation Box plugin should assess exposure and prioritize verification and potential updates. Security teams and WordPress administrators should review their inventory of plugins and ensure that they are running a version that is not vulnerable.

Why it matters

CVE-2026-93885 is a high-severity vulnerability in the Cryptocurrency Donation Box plugin for WordPress, allowing unauthenticated stored cross-site scripting. Defenders should prioritize verification and remediation to prevent potential attacks.

• Unauthenticated stored cross-site scripting allows attackers to inject malicious scripts into pages, potentially leading to unauthorized actions or data theft.
• The vulnerability can be exploited without authentication, making it a high-risk issue for WordPress installations using the affected plugin.
• Defenders should verify the presence of this vulnerability in their environment and prioritize remediation to prevent potential attacks.
• The exploitation of this vulnerability requires no authentication, increasing the risk of successful attacks.

Technical summary

The Cryptocurrency Donation Box – Bitcoin & Crypto Donations plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the data_object parameter in versions up to and including 2.2.13. The vulnerability allows unauthenticated attackers to inject arbitrary web scripts into pages, which will execute when a user accesses an injected page. This is possible because the cdbbc_payment_verify AJAX action is registered under wp_ajax_nopriv_ and its nonce check can be bypassed.

Defensive priority

Defenders should prioritize verifying the presence of this vulnerability in their WordPress installations and updating to a patched version if available.

Recommended defensive actions

• Verify the version of the Cryptocurrency Donation Box plugin in use and update to a patched version if available.
• Implement additional security measures to monitor and restrict interactions with the cdbbc_payment_verify AJAX action.
• Review and enhance input sanitization and output escaping practices for user-supplied data in WordPress plugins.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record and source item provide details about the vulnerability, including its existence in versions up to 2.2.13 of the Cryptocurrency Donation Box plugin and the potential for unauthenticated stored cross-site scripting.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.