CVE-2026-121548

HIGH 7.8

nnn through 5.3 OS Command Injection via togglex Plugin

CVSS Score

7.8

EPSS Score

0.0%

EPSS Percentile

0th

Jarun nnn through 5.3 contains an OS command injection vulnerability in plugins/togglex that allows attackers to execute commands via crafted filenames. Attackers can place files whose names contain a double quote and shell syntax, which xargs -I splices into an sh -c script, running commands as the user invoking togglex.

CWE	CWE-78
Vendor	jarun
Product	nnn
Published	Nov 3, 2026
Last Updated	Nov 3, 2026

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CVSS v3 Breakdown

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

jarun / nnn

0 ≤ 5.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/jarun/nnn/issues/2188 github.com: https://github.com/jarun/nnn github.com: https://github.com/jarun/nnn/commit/04715921aece0257fef7a8558c0783493d98efff github.com: https://github.com/jarun/nnn/blob/v5.3/plugins/togglex#L15 vulncheck.com: https://www.vulncheck.com/advisories/nnn-through-5.3-os-command-injection-via-togglex-plugin

Credits

George Chen