CVE-2026-11855 (GCVE-0-2026-11855)

Vulnerability from cvelistv5 – Published: 2026-07-06 06:00 – Updated: 2026-07-06 12:01
VLAI
Title
Simple Membership < 4.7.5 - Unauthenticated Stored XSS via Stripe Webhook API Version
Summary
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.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://wpscan.com/vulnerability/217cb606-a0f2-44… exploitvdb-entrytechnical-description
Impacted products
Vendor Product Version
Unknown Simple Membership Affected: 0 , < 4.7.5 (semver)
Create a notification for this product.
Credits
Duy Tran WPScan
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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