{"id":"CVE-2026-41180","summary":"PsiTransfer: Upload PATCH path traversal can create `config.\u003cNODE_ENV\u003e.js` and lead to code execution on restart","details":"PsiTransfer is an open source, self-hosted file sharing solution. Prior to version 2.4.3, the upload PATCH flow under `/files/:uploadId` validates the mounted request path using the still-encoded `req.path`, but the downstream tus handler later writes using the decoded `req.params.uploadId`. In deployments that use a supported custom `PSITRANSFER_UPLOAD_DIR` whose basename prefixes a startup-loaded JavaScript path, such as `conf`, an unauthenticated attacker can create `config.\u003cNODE_ENV\u003e.js` in the application root. The attacker-controlled file is then executed on the next process restart. Version 2.4.3 contains a patch.","aliases":["GHSA-533q-w4g6-5586"],"modified":"2026-07-08T08:13:12.652498949Z","published":"2026-04-23T00:10:58.230Z","database_specific":{"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41180.json","cwe_ids":["CWE-22"]},"references":[{"type":"WEB","url":"https://github.com/psi-4ward/psitransfer/releases/tag/v2.4.3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41180.json"},{"type":"ADVISORY","url":"https://github.com/psi-4ward/psitransfer/security/advisories/GHSA-533q-w4g6-5586"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41180"},{"type":"FIX","url":"https://github.com/psi-4ward/psitransfer/commit/8b547bf3e09757122efa00aab90281e3915aa0c6"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/psi-4ward/psitransfer","events":[{"introduced":"0"},{"fixed":"8b547bf3e09757122efa00aab90281e3915aa0c6"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.4.3"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v2.4.2","v2.4.1","v2.4.0","v2.3.2","v2.3.1","2.3","v2.3.0","v2.2.0","v2.1.2","v2.1.1","v2.1.0","v2.0.1","v2.0.0","2.0","1.3.4","1.3.3","1.3","1.3.2","1.3.1","1.3.0","1.2.0","1.2","1","1.1.1","1.1","1.1.0","1.1.0-beta","1.0.0","1.0","1.0.0-rc.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41180.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}