No VulnCrest analysis published for this CVE yet. Below is the original CNA/NVD description, unmodified.
Description
nnn through 5.3 contains an insecure file handling vulnerability that allows local attackers to redirect writes because main() accepts an existing NNN_FIFO path without verifying it is a FIFO. Attackers can pre-create the documented predictable /tmp/nnn.fifo path as a symlink or readable regular file, causing victim-writable files to be overwritten or leaking the victim's browsed paths.
Exploits & detection
No public PoC or detection template found yet.
Timeline
- Published: 03 Nov 2026
- Last modified upstream: 09 Nov 2026
Sources & licenses
- CVE / CVSS / CWE
- NVD record ↗ (unmodified). This product uses the NVD API but is not endorsed or certified by the NVD. CVE® © The MITRE Corporation.
- Exploitation
- CISA KEV (CC0) · EPSS by FIRST.org
- References used for the analysis
- https://github.com/jarun/nnn
- https://github.com/jarun/nnn/blob/v5.3/src/nnn.c#L10635
- https://github.com/jarun/nnn/blob/v5.3/src/nnn.c#L7433
- https://github.com/jarun/nnn/commit/04715921aece0257fef7a8558c0783493d98efff
- https://github.com/jarun/nnn/issues/2188
- https://www.vulncheck.com/advisories/nnn-through-5.3-symlink-following-write-via-nnn-fifo-handling
- Analysis, summary and remediation
- © VulnCrest