CVE-2026-121549
mediumnnn through 5.3 contains an insecure temporary file vulnerability in the pdfread and nuke plugins that allows local attackers to overwrite files by exploiting…
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.
CVSS
4.4
4.4 (CVSS v3.1)
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-11-03 16:17
Modified: 2026-11-03 16:30
NVD status: Awaiting Analysis
Last synced 1 day ago
Verified against the source API 2026-11-03 16:50 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/jarun/nnn disclosure@vulncheck.com
- https://github.com/jarun/nnn/blob/v5.3/plugins/nuke#L280 disclosure@vulncheck.com
- https://github.com/jarun/nnn/blob/v5.3/plugins/pdfread#L9-L10 disclosure@vulncheck.com
- https://github.com/jarun/nnn/commit/04715921aece0257fef7a8558c0783493d98efff disclosure@vulncheck.com
- https://github.com/jarun/nnn/issues/2188 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/nnn-through-5.3-insecure-temporary-file-symlink-overw... disclosure@vulncheck.com
Data sources
NVD CVE API 2.0 — fetched 2026-11-03 16:50 UTC · record ↗