The Simple Membership plugin for WordPress is vulnerable to Improper Handling of Missing Values in all versions up to, and including, 4.7.0 via the Stripe webhook handler. This is due to the plugin only validating webhook signatures when the stripe-webhook-signing-secret setting is configured, which is empty by default. This makes it possible for unauthenticated attackers to forge Stripe webhook events to manipulate membership subscriptions, including reactivating expired memberships without payment or canceling legitimate subscriptions, potentially leading to unauthorized access and service disruption.
CVE-2026-1461
Score 6.5 from GitHub Security Advisory published 2026-02-19. NVD baseline CVSS 6.5; sources differ by 0.0.
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.5
- EG Score
- 6.5(medium)
- EPSS
- 13.5%
- KEV
- Not listed
Published
February 19, 2026
Last Modified
April 15, 2026
References (4)
- security@wordfencehttps://plugins.trac.wordpress.org/browser/simple-membership/trunk/classes/class.swpm-wp-loaded-tasks.php#L90
- security@wordfencehttps://plugins.trac.wordpress.org/browser/simple-membership/trunk/ipn/swpm-stripe-webhook-handler.php#L26
- security@wordfencehttps://plugins.trac.wordpress.org/changeset/3453404/
- security@wordfencehttps://www.wordfence.com/threat-intel/vulnerabilities/id/4e4df9a6-8f7d-428b-a596-0751ca047169?source=cve
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 36× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 105 total refreshes for this CVE.
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Frequently asked(5)
What is CVE-2026-1461?
When was CVE-2026-1461 disclosed?
Is CVE-2026-1461 actively exploited?
What is the CVSS score of CVE-2026-1461?
How do I remediate CVE-2026-1461?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-1461
Is Your Infrastructure Affected by CVE-2026-1461?
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