CVE-2026-121549 (GCVE-0-2026-121549)
Vulnerability from cvelistv5 – Published: 2026-11-03 15:17 – Updated: 2026-11-07 03:08
VLAI
EPSS
VEX
Title
nnn through 5.3 Insecure Temporary File Symlink Overwrite via pdfread and nuke Plugins
Summary
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.
Severity
4.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-07 03:08 UTC
CWE
- CWE-377 - Insecure Temporary File
Assigner
VulnCheck
CNA
References
6 references
| URL | Tags |
|---|---|
| https://github.com/jarun/nnn/issues/2188 | issue-tracking |
| https://github.com/jarun/nnn | product |
| https://github.com/jarun/nnn/commit/04715921aece0… | patch |
| https://github.com/jarun/nnn/blob/v5.3/plugins/pd… | technical-description |
| https://github.com/jarun/nnn/blob/v5.3/plugins/nu… | technical-description |
| https://www.vulncheck.com/advisories/nnn-through-… | third-party-advisory |
Date Public
2026-10-31 00:00
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Nomenclature
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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