{"id":"CVE-2026-11855","state":"PUBLISHED","title":"Simple Membership < 4.7.5 - Unauthenticated Stored XSS via Stripe Webhook API Version","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.","publishedAt":"2026-07-06T06:00:01.657Z","updatedAt":"2026-07-06T12:01:41.739Z","severity":{"score":8.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"WPScan","products":["Unknown Simple Membership"],"affected":[{"vendor":"Unknown","product":"Simple Membership","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"4.7.5","versionType":"semver"}]}],"references":["https://wpscan.com/vulnerability/217cb606-a0f2-4427-9262-cfe1cc90474e/"],"weaknesses":[],"ingestedAt":"2026-10-29T20:10:52.580Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/11xxx/CVE-2026-11855.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-11855","state":"PUBLISHED","datePublished":"2026-07-06T06:00:01.657Z","dateUpdated":"2026-07-06T12:01:41.739Z","assignerShortName":"WPScan","assignerOrgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","dateReserved":"2026-06-10T08:56:17.436Z"},"containers":{"cna":{"title":"Simple Membership < 4.7.5 - Unauthenticated Stored XSS via Stripe Webhook API Version","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Unknown","product":"Simple Membership","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"4.7.5","versionType":"semver"}]}],"references":[{"url":"https://wpscan.com/vulnerability/217cb606-a0f2-4427-9262-cfe1cc90474e/","tags":["exploit","vdb-entry","technical-description"]}],"problemTypes":[{"descriptions":[{"description":"CWE-79 Cross-Site Scripting (XSS)","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"WPScan","orgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","dateUpdated":"2026-07-06T06:00:01.657Z"},"credits":[{"lang":"en","value":"Duy Tran","type":"finder"},{"lang":"en","value":"WPScan","type":"coordinator"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"WPScan CVE Generator"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":8.8,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-07-06T12:01:19.019388Z","id":"CVE-2026-11855","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-06T12:01:41.739Z"}}]}}}