{"id":"CVE-2026-65048","state":"PUBLISHED","title":"Ninja Forms Unauthenticated Stored Cross-Site Scripting via Repeatable Fieldset Submission Index","description":"Ninja Forms plugin for WordPress versions 3.10.4 through 3.14.9 contains an unauthenticated stored cross-site scripting vulnerability in the Repeatable Fieldset feature where parseSubmissionIndex() accepts arbitrary strings as submission indexes without numeric validation, and admin_form_element() interpolates the index directly into HTML without escaping. An unauthenticated attacker can submit a public form with a crafted repeater child key containing malicious script payloads, which execute in an administrator's browser when viewing submissions in the WordPress admin panel, enabling session-cookie theft, creation of administrator accounts, installation of malicious plugins, and arbitrary modification of site content.","publishedAt":"2026-07-21T14:16:08.414Z","updatedAt":"2026-07-22T14:56:24.647Z","severity":{"score":9.3,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["Saturday Drive Ninja Forms"],"affected":[{"vendor":"Saturday Drive","product":"Ninja Forms","defaultStatus":"affected","versions":[{"version":"3.10.4","status":"affected","lessThan":"3.14.9","versionType":"semver"},{"version":"3.14.9","status":"unaffected","versionType":"semver"}]}],"references":["https://wordpress.org/plugins/ninja-forms/","https://wordpress.org/plugins/ninja-forms/changelog/","https://www.vulncheck.com/advisories/ninja-forms-unauthenticated-stored-cross-site-scripting-via-repeatable-fieldset-submission-index"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/65xxx/CVE-2026-65048.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-65048","state":"PUBLISHED","datePublished":"2026-07-21T14:16:08.414Z","dateUpdated":"2026-07-22T14:56:24.647Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-07-21T14:05:53.719Z"},"containers":{"cna":{"title":"Ninja Forms Unauthenticated Stored Cross-Site Scripting via Repeatable Fieldset Submission Index","descriptions":[{"lang":"en","value":"Ninja Forms plugin for WordPress versions 3.10.4 through 3.14.9 contains an unauthenticated stored cross-site scripting vulnerability in the Repeatable Fieldset feature where parseSubmissionIndex() accepts arbitrary strings as submission indexes without numeric validation, and admin_form_element() interpolates the index directly into HTML without escaping. An unauthenticated attacker can submit a public form with a crafted repeater child key containing malicious script payloads, which execute in an administrator's browser when viewing submissions in the WordPress admin panel, enabling session-cookie theft, creation of administrator accounts, installation of malicious plugins, and arbitrary modification of site content."}],"affected":[{"vendor":"Saturday Drive","product":"Ninja Forms","defaultStatus":"affected","versions":[{"version":"3.10.4","status":"affected","lessThan":"3.14.9","versionType":"semver"},{"version":"3.14.9","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://wordpress.org/plugins/ninja-forms/","name":"Product","tags":["product"]},{"url":"https://wordpress.org/plugins/ninja-forms/changelog/","name":"Vendor Changelog","tags":["patch"]},{"url":"https://www.vulncheck.com/advisories/ninja-forms-unauthenticated-stored-cross-site-scripting-via-repeatable-fieldset-submission-index","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","subIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"CRITICAL","baseScore":9.3,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE","version":"3.1","baseSeverity":"CRITICAL","baseScore":9.3,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-07-22T14:56:24.647Z"},"datePublic":"2026-07-21T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:ninjaforms:ninja_forms:*:*:*:*:*:wordpress:*:*","versionStartIncluding":"3.10.4","versionEndExcluding":"3.14.9"}]}]}],"credits":[{"lang":"en","value":"Pavel Kohout, Aisle Research","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"vulncheck"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-21T16:41:39.926950Z","id":"CVE-2026-65048","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-21T16:43:05.542Z"}}]}}}