{"id":"CVE-2026-49253","revision":"780be2e1720d4406b397716c9b729ff9","records":[{"revision":"780be2e1720d4406b397716c9b729ff9","observedAt":"2026-10-25T12:17:32.273+00:00","statement":{"source":"nvd","id":"CVE-2026-49253","aliases":[],"title":"electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. Prior to 3.11.11, electerm uses remote-supplied filenames directly with path.join() while receiving Zmodem and Trzsz transfers. In src/app/server/zmod…","description":"electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. Prior to 3.11.11, electerm uses remote-supplied filenames directly with path.join() while receiving Zmodem and Trzsz transfers. In src/app/server/zmodem.js, prepareReceiveFile() joins the filename to the user-selected save path, and in src/app/server/trzsz.js, getUniqueFilePath(), the openSaveFile() callback, and the savedFilePaths mapping construct destinations without sanitization. A malicious SSH server or remote shell can provide a filename containing traversal components such as ../escaped.txt or ../../.bashrc. When the victim accepts the transfer and selects a download directory, electerm can write outside that directory and overwrite files accessible to the desktop user, potentially changing sensitive configuration or impairing availability. This issue is fixed in version 3.11.11.","state":0,"publishedAt":"2026-08-19T15:17:06.747+00:00","modifiedAt":"2026-09-09T21:13:25.91+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L","score":7.1,"severity":"HIGH"}],"references":["https://github.com/electerm/electerm/commit/fde153d677a170c5816368f6586647f3af4ef284","https://github.com/electerm/electerm/releases/tag/v3.11.11","https://github.com/electerm/electerm/security/advisories/GHSA-38j7-23hf-9mhc"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-49253","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-22"],"productCriteria":[],"sourceDates":{"published":"2026-08-19T15:17:06.747","lastModified":"2026-09-09T21:13:25.910"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-49253","identifiers":["CVE-2026-49253"]},"retained":false,"historicalAffected":[]}],"coverage":[]}