{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-54134","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-11T21:15:33.870Z","datePublished":"2026-08-21T18:28:15.925Z","dateUpdated":"2026-08-21T18:28:15.925Z"},"containers":{"cna":{"title":"OctoPrint: File exfiltration possible via query parameters on upload endpoints","problemTypes":[{"descriptions":[{"cweId":"CWE-73","lang":"en","description":"CWE-73: External Control of File Name or Path","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"ADJACENT","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/OctoPrint/OctoPrint/security/advisories/GHSA-j4h9-pm27-4rfw","tags":["x_refsource_CONFIRM"],"url":"https://github.com/OctoPrint/OctoPrint/security/advisories/GHSA-j4h9-pm27-4rfw"},{"name":"https://github.com/OctoPrint/OctoPrint/commit/579148beeb6d6e9b3d41b1cf32309b47218ed380","tags":["x_refsource_MISC"],"url":"https://github.com/OctoPrint/OctoPrint/commit/579148beeb6d6e9b3d41b1cf32309b47218ed380"},{"name":"https://github.com/OctoPrint/OctoPrint/commit/8e3348197db867c30a32d13984f0bd0d664be413","tags":["x_refsource_MISC"],"url":"https://github.com/OctoPrint/OctoPrint/commit/8e3348197db867c30a32d13984f0bd0d664be413"},{"name":"https://github.com/OctoPrint/OctoPrint/releases/tag/1.11.8","tags":["x_refsource_MISC"],"url":"https://github.com/OctoPrint/OctoPrint/releases/tag/1.11.8"},{"name":"https://github.com/OctoPrint/OctoPrint/releases/tag/2.0.0rc3","tags":["x_refsource_MISC"],"url":"https://github.com/OctoPrint/OctoPrint/releases/tag/2.0.0rc3"}],"affected":[{"vendor":"OctoPrint","product":"OctoPrint","versions":[{"version":"< 1.11.8","status":"affected"},{"version":">= 2.0.0rc1, < 2.0.0rc3","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-08-21T18:28:15.925Z"},"descriptions":[{"lang":"en","value":"OctoPrint provides a web interface for controlling consumer 3D printers. Prior to 1.11.8 and 2.0.0rc3, OctoPrint's custom Tornado upload handler and Flask with Werkzeug parse request parameters differently, allowing an attacker with FILE_UPLOAD permission to inject reserved internal upload fields through query parameters or parser differentials despite the earlier GHSA-m9jh-jf9h-x3h2 fix. The affected endpoints are /api/files/{local|sdcard}, /api/languages, /plugin/backup/restore, and /plugin/pluginmanager/upload_file. An attacker can make OctoPrint treat an arbitrary host file as a temporary upload, move it into a downloadable upload directory, disclose configuration secrets or other readable files, and remove runtime files in a way that can affect a later restart. This issue is fixed in versions 1.11.8 and 2.0.0rc3."}],"source":{"advisory":"GHSA-j4h9-pm27-4rfw","discovery":"UNKNOWN"}}}}