CVE-2026-121549

MediumCVSS 4.4/10Last modified Nov 7, 2026

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.

Metrics

CVSS 3.1 4.4/10CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-377

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
jarun	nnn	<= 5.3

References

Timeline

Published: Nov 3, 2026
Last modified: Nov 7, 2026
NVD status: Awaiting Analysis

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