Vulnerability in Smub Charitable – Donation Plugin For WordPress Fundraising With Recurring Donations & More

CVE-2026-3177

The Charitable – Donation Plugin for WordPress – Fundraising with Recurring Donations & More plugin for WordPress is vulnerable to Insufficient Verification of Data Authenticity in versions up to, and including, 1.8.9.7. This is due to missing cryptographic verification of incoming Stripe webhook events. This makes it possible for unauthenticated attackers to forge payment_intent.succeeded webhook payloads and mark pending donations as completed without a real payment.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (5.6th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 5.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-3177: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-3177?
CVE-2026-3177 is a medium-severity vulnerability in Smub Charitable – Donation Plugin For WordPress Fundraising With Recurring Donations & More, classified under Insufficient Verification of Data Authenticity. CVSS score: 5.3/10. Published 2026-04-07.
How severe is CVE-2026-3177?
Medium severity. CVSS v3 base score is 5.3 out of 10.