{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-126269","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-11-10T20:13:22.557Z","datePublished":"2026-11-13T09:36:47.840Z","dateUpdated":"2026-11-13T09:36:47.840Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-11-13T09:36:47.840Z"},"datePublic":"2026-10-27T00:00:00.000Z","title":"NocoDB before 2026.09.0 Stored XSS via Attachment MIME Type","descriptions":[{"lang":"en","value":"NocoDB before 2026.09.0 contains a stored cross-site scripting vulnerability that allows authenticated Editor users to execute scripts by storing crafted attachment MIME types like text/html;image/png. Attackers can write the value through the records API so the /dltemp signed URL serves HTML inline, stealing session tokens from localStorage to impersonate victims."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","cweId":"CWE-79","type":"CWE"}]}],"affected":[{"vendor":"nocodb","product":"nocodb","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","versionType":"custom","lessThan":"2026.09.0"},{"version":"2026.09.0","status":"unaffected","versionType":"custom"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:nocodb:nocodb:*:*:*:*:*:*:*:*","versionEndExcluding":"2026.09.0"}]}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"PASSIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"NONE","baseScore":9.3,"baseSeverity":"CRITICAL"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH"}}],"references":[{"url":"https://github.com/nocodb/nocodb/security/advisories/GHSA-3f7w-wqf7-786q","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-3f7w-wqf7-786q)"},{"name":"VulnCheck Advisory: NocoDB before 2026.09.0 Stored XSS via Attachment MIME Type","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/nocodb-before-2026.09.0-stored-xss-via-attachment-mime-type"}],"credits":[{"lang":"en","value":"PratibhaDevi29","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}}}}