{"id":"CVE-2026-121549","published":"2026-11-03T16:17:26.730","lastModified":"2026-11-03T16:30:17.150","description":"nnn through 5.3 contains an insecure temporary file vulnerability in the pdfread and nuke plugins that allows local attackers to overwrite files by exploiting predictable paths in /tmp. Attackers can pre-create a symlink at the name-derived or PID-derived path so the victim's plugin truncates and overwrites any file the victim can write.","cvssScore":4.4,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N","cwes":["CWE-377"],"vendors":[],"products":[],"references":[{"url":"https://github.com/jarun/nnn","tags":[]},{"url":"https://github.com/jarun/nnn/blob/v5.3/plugins/nuke#L280","tags":[]},{"url":"https://github.com/jarun/nnn/blob/v5.3/plugins/pdfread#L9-L10","tags":[]},{"url":"https://github.com/jarun/nnn/commit/04715921aece0257fef7a8558c0783493d98efff","tags":[]},{"url":"https://github.com/jarun/nnn/issues/2188","tags":[]},{"url":"https://www.vulncheck.com/advisories/nnn-through-5.3-insecure-temporary-file-symlink-overwrite-via-pdfread-and-nuke-plugins","tags":[]}],"exploitRefs":[{"url":"https://github.com/jarun/nnn","tags":[]},{"url":"https://github.com/jarun/nnn/blob/v5.3/plugins/nuke#L280","tags":[]},{"url":"https://github.com/jarun/nnn/blob/v5.3/plugins/pdfread#L9-L10","tags":[]},{"url":"https://github.com/jarun/nnn/commit/04715921aece0257fef7a8558c0783493d98efff","tags":[]},{"url":"https://github.com/jarun/nnn/issues/2188","tags":[]}],"hasPoc":true,"ai":null}