CVE-2026-93885: XSS (CVSS 7.2)

Description

The Cryptocurrency Donation Box – Bitcoin & Crypto Donations plugin for WordPress is vulnerable to Stored Cross-Site Scripting via data_object Parameter in all versions up to, and including, 2.2.13 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is exploitable by unauthenticated attackers because the cdbbc_payment_verify AJAX action is registered under wp_ajax_nopriv_ and its only authentication gate — a nonce check — is bypassable, as the cdbbc_donation_box nonce is publicly exposed to anonymous visitors via the wallets_data JavaScript object emitted by the [crypto-donation-box] shortcode.

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CVSS v3.1 Score

7.2

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

EPSS — Exploit Prediction

0.0039

Probability of exploitation

0.32%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

References

Other References

https://plugins.trac.wordpress.org/browser/cryptocurrency-donation-box/trunk/admin/table/cdbbc-list-table.php#L109 https://plugins.trac.wordpress.org/browser/cryptocurrency-donation-box/trunk/cryptocurrency-donation-box.php#L83 https://plugins.trac.wordpress.org/browser/cryptocurrency-donation-box/trunk/includes/cdbbc-payment-verify.php#L57 https://plugins.trac.wordpress.org/browser/cryptocurrency-donation-box/trunk/includes/cdbbc-payment-verify.php#L98 https://plugins.trac.wordpress.org/browser/cryptocurrency-donation-box/trunk/includes/cdbbc-shortcode.php#L75 https://www.wordfence.com/threat-intel/vulnerabilities/id/9c3724f3-ebd9-4804-88e0-804fd423af3a?source=cve

Frequently Asked Questions

What is CVE-2026-93885? +

The Cryptocurrency Donation Box – Bitcoin & Crypto Donations plugin for WordPress is vulnerable to Stored Cross-Site Scripting via data_object Parameter in all versions up to, and including, 2.2.13 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is exploitable by unauthenticated attackers because the cdbbc_payment_verify AJAX action is registered under wp_ajax_nopriv_ and its only authentication gate — a nonce check — is bypassable, as the cdbbc_donation_box nonce is publicly exposed to anonymous visitors via the wallets_data JavaScript object emitted by the [crypto-donation-box] shortcode. It has a CVSS v3.1 base score of 7.2 (HIGH).

How severe is CVE-2026-93885? +

CVE-2026-93885 has a CVSS v3.1 score of 7.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0039, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-93885? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-93885