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VULNERABILITIES

CVE-2026-121549 Details

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.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:4.4 MEDIUMVector:CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/jarun/nnn/issues/2188 CISA-ADP
https://github.com/jarun/nnn [email protected]
https://github.com/jarun/nnn/blob/v5.3/plugins/nuke#L280 [email protected]
https://github.com/jarun/nnn/blob/v5.3/plugins/pdfread#L9-L10 [email protected]
https://github.com/jarun/nnn/commit/04715921aece0257fef7a8558c0783493d98efff [email protected]

see all 7 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-377Insecure Temporary File[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-121549
NVD Published Date:
Nov 3, 2026
NVD Last Modified:
Nov 7, 2026
Source:
[email protected]
CVE-2026-121549 Details - Not Deferred