The Simple Membership WordPress plugin before 4.7.5 does not verify the authenticity of Stripe webhook requests when no signing secret is configured, nor escape a value taken from them before outputting it in an administrator notice, allowing unauthenticated attackers to inject arbitrary web scripts that execute in the context of a logged-in administrator.

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Fixes

Solution

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Workaround

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History

Mon, 06 Jul 2026 17:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284
CWE-79

Mon, 06 Jul 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 06 Jul 2026 07:30:00 +0000

Type Values Removed Values Added
Description The Simple Membership WordPress plugin before 4.7.5 does not verify the authenticity of Stripe webhook requests when no signing secret is configured, nor escape a value taken from them before outputting it in an administrator notice, allowing unauthenticated attackers to inject arbitrary web scripts that execute in the context of a logged-in administrator.
Title Simple Membership < 4.7.5 - Unauthenticated Stored XSS via Stripe Webhook API Version
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-07-06T12:01:41.739Z

Reserved: 2026-06-10T08:56:17.436Z

Link: CVE-2026-11855

cve-icon Vulnrichment

Updated: 2026-07-06T12:01:37.973Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-06T17:30:16Z

Weaknesses