CVE-2026-121548
nnn through 5.3 OS Command Injection via togglex Plugin
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.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| nnn jarun |
≥ 0; ≤ 5.3 (affected, custom)
Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 8.4 high |
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | CNA: VulnCheck |
| 3.1 / 7.8 high |
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | CNA: VulnCheck |
| 4.0 / 8.4 high |
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
| 3.1 / 7.8 high |
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | NVD: [email protected] |
Exploit evidence
- https://github.com/jarun/nnn/issues/2188
exploit · ADP: CISA-ADP
References
- https://github.com/jarun/nnn/issues/2188CNA: VulnCheck · issue-tracking
- https://github.com/jarun/nnnCNA: VulnCheck · product
- https://github.com/jarun/nnn/commit/04715921aece0257fef7a8558c0783493d98efffCNA: VulnCheck · patch
- https://github.com/jarun/nnn/blob/v5.3/plugins/togglex#L15CNA: VulnCheck · technical-description
- https://www.vulncheck.com/advisories/nnn-through-5.3-os-command-injection-via-togglex-pluginCNA: VulnCheck · third-party-advisory
- https://github.com/jarun/nnn/issues/2188ADP: CISA-ADP · exploit
- https://github.com/jarun/nnn[email protected]
- https://github.com/jarun/nnn/blob/v5.3/plugins/togglex#L15[email protected]
- https://github.com/jarun/nnn/commit/04715921aece0257fef7a8558c0783493d98efff[email protected]
- https://github.com/jarun/nnn/issues/2188[email protected]
- https://www.vulncheck.com/advisories/nnn-through-5.3-os-command-injection-via-togglex-plugin[email protected]
- https://github.com/jarun/nnn/issues/2188134c704f-9b21-4f2e-91b3-4a467353bcc0
For agents and automation
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