{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-9053","assignerOrgId":"1d66c9f9-fff2-411a-aa19-ca6312fa25e9","state":"PUBLISHED","assignerShortName":"9front","dateReserved":"2026-05-19T21:39:13.119Z","datePublished":"2026-05-22T02:57:35.162Z","dateUpdated":"2026-05-22T12:36:11.446Z"},"containers":{"cna":{"providerMetadata":{"orgId":"1d66c9f9-fff2-411a-aa19-ca6312fa25e9","shortName":"9front","dateUpdated":"2026-05-22T02:57:35.162Z"},"affected":[{"vendor":"9front","product":"9front","platforms":["x86","32 bit","64 bit"],"packageName":"mothra","repo":"https://git.9front.org/plan9front/9front/HEAD/info.html","modules":["mothra"],"programFiles":["/sys/src/cmd/mothra/forms.c"],"programRoutines":[{"name":"rdform()"}],"versions":[{"status":"affected","version":"f04e113279274526a8dae34de373027b68921fbf","lessThan":"d145acc9ef0da47131af6ad94e87264e04870d47","versionType":"git"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"Mothra would respect a default value given by a website for HTML file upload forms. An attacker could craft a website with a malicious default file path, and then conceal this form element.","supportingMedia":[{"type":"text/html","base64":false,"value":"Mothra would respect a default value given by a website for HTML file upload forms. An attacker could craft a website with a malicious default file path, and then conceal this form element."}]}],"references":[{"url":"https://git.9front.org/plan9front/9front/d145acc9ef0da47131af6ad94e87264e04870d47/commit.html","tags":["mitigation"]}],"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":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"PROOF_OF_CONCEPT","Safety":"NOT_DEFINED","Automatable":"NO","Recovery":"AUTOMATIC","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"LOW","providerUrgency":"AMBER","version":"4.0","baseSeverity":"MEDIUM","baseScore":6.9,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:P/AU:N/R:A/RE:L/U:Amber"}}],"timeline":[{"time":"2026-05-10T18:00:00.000Z","lang":"en","value":"Initial private disclosure"},{"time":"2026-05-11T18:18:00.000Z","lang":"en","value":"Fix committed"}],"credits":[{"lang":"en","value":"Kristo","type":"finder"},{"lang":"en","value":"Kristo","type":"reporter"},{"lang":"en","value":"Jacob Moody","type":"coordinator"},{"lang":"en","value":"Kristo","type":"remediation developer"},{"lang":"en","value":"cinap_lenrek","type":"remediation developer"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.2"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-434","lang":"en","description":"CWE-434 Unrestricted Upload of File with Dangerous Type"}]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-22T12:35:42.430223Z","id":"CVE-2026-9053","options":[{"Exploitation":"none"},{"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":"2026-05-22T12:36:11.446Z"}}]}}