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TI-2026-84354 Aliases CVE-2026-121548GHSA-8pw3-3g5c-862j

OS command injection in nnn togglex plugin via crafted filenames

Priority HIGH 72CWE-78Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Active
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

Jarun nnn through 5.3 contains an OS command injection flaw (CWE-78) in its togglex plugin. The plugin splices filenames into a shell script through xargs, so a file name containing a double quote and shell syntax runs commands. An attacker who can place such files can run commands as the user who invokes togglex.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01152 67th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
jarunnnnup to 5.3—No fix listedCNA
  • nnn Vendorjarun Affected up to 5.3 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for nnn.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-11-03 Threatist record created from CVE-2026-121548
  2. 2026-11-03 CISA SSVC decision points changed
  3. 2026-11-03 Priority changed: MEDIUM → HIGH
  4. 2026-11-03 Alias added: GHSA-8pw3-3g5c-862j
  5. 2026-11-04 Affected versions changed · Red Hat
  6. 2026-11-04 CVSS score added · Red Hat

References

Patch 1

Other 3

  • TI-2026-84355 nnn Insecure Temporary File Symlink Overwrite via pdfread and nuke Plugins CVSS 4.0MEDIUM 4.1
  • TI-2026-85580 Server-side request forgery in Buku bukuserver reaches internal hosts CVSS 4.0MEDIUM 6.3
  • TI-2026-84450 Stored cross-site scripting in buku bookmark list via bookmark URL CVSS 4.0MEDIUM 5.3
  • TI-2025-12396 jarun nnn nnn.c run_cmd_as_plugin double free CVSS 4.0MEDIUM 4.8
  • TI-2026-84356 Symlink-following write in nnn via NNN_FIFO handling CVSS 4.0LOW 1.0

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences