{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-42840","assignerOrgId":"84fe0718-d6bb-4716-a7e8-81a6d1daa869","state":"PUBLISHED","assignerShortName":"Fluid Attacks","dateReserved":"2026-04-30T15:23:30.711Z","datePublished":"2026-06-03T17:35:04.126Z","dateUpdated":"2026-06-03T18:59:26.898Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","platforms":["Windows","MacOS","Linux"],"product":"ERPNext","vendor":"Frappe","versions":[{"status":"affected","version":"16.16.0"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:frappe:erpnext:16.16.0:*:windows:*:*:*:*:*","vulnerable":true},{"criteria":"cpe:2.3:a:frappe:erpnext:16.16.0:*:macos:*:*:*:*:*","vulnerable":true},{"criteria":"cpe:2.3:a:frappe:erpnext:16.16.0:*:linux:*:*:*:*:*","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"}],"credits":[{"lang":"en","type":"finder","value":"Fluid Attacks' AI SAST Scanner"},{"lang":"en","type":"finder","value":"Oscar Naveda"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<span style=\"background-color: rgb(255, 255, 255);\">An authenticated user can persist arbitrary HTML/JavaScript in the </span><code>email_id</code><span style=\"background-color: rgb(255, 255, 255);\"> or </span><code>mobile_no</code><span style=\"background-color: rgb(255, 255, 255);\"> fields of a Customer record and trigger unescaped rendering in the Point of Sale (POS) interface for every operator who selects that customer.</span><br><p>This issue affects ERPNext: 16.16.0.</p>"}],"value":"An authenticated user can persist arbitrary HTML/JavaScript in the email_id or mobile_no fields of a Customer record and trigger unescaped rendering in the Point of Sale (POS) interface for every operator who selects that customer.\nThis issue affects ERPNext: 16.16.0."}],"impacts":[{"capecId":"CAPEC-592","descriptions":[{"lang":"en","value":"CAPEC-592 Stored XSS"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.1,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"84fe0718-d6bb-4716-a7e8-81a6d1daa869","shortName":"Fluid Attacks","dateUpdated":"2026-06-03T17:35:04.126Z"},"references":[{"tags":["third-party-advisory"],"url":"https://fluidattacks.com/es/advisories/weeknd"},{"tags":["product"],"url":"https://github.com/frappe/erpnext"}],"source":{"discovery":"UNKNOWN"},"title":"ERPNext 16.16.0 - Stored XSS in POS customer section via unescaped template literals","x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"references":[{"url":"https://fluidattacks.com/es/advisories/weeknd","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-03T18:59:20.378277Z","id":"CVE-2026-42840","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-03T18:59:26.898Z"}}]}}