---
id: CVE-2026-108980
title: >-
  Blinko through 1.8.8 allows directory traversal, overwriting startup files as
  root, via installPlugin
summary: >-
  Blinko through 1.8.8 allows directory traversal, overwriting startup files as
  root, via installPlugin. It builds the plugin install path from an unsanitized
  name in server/routerTrpc/plugin.ts, and the plugin.installPlugin tRPC
  procedure…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-24
published: '2026-10-12'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T02:16:57.297'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-108980'
references:
  - url: >-
      https://github.com/blinkospace/blinko/blob/178e4b3538a21823a50ac2481e653d56cb1ffa86/app/src/pages/signin.tsx#L238-L243
    label: cve@mitre.org
  - url: >-
      https://github.com/blinkospace/blinko/blob/178e4b3538a21823a50ac2481e653d56cb1ffa86/server/routerTrpc/plugin.ts#L273
    label: cve@mitre.org
  - url: 'https://github.com/kashishtopi/blinko-plugin-path-traversal-rce'
    label: cve@mitre.org
tags:
  - nvd
ingestedAt: '2026-10-12T14:50:34.075Z'
---

## Overview

Blinko through 1.8.8 allows directory traversal, overwriting startup files as root, via installPlugin. It builds the plugin install path from an unsanitized name in server/routerTrpc/plugin.ts, and the plugin.installPlugin tRPC procedure is open to any authenticated user. Thus, a name containing ../ sequences writes the downloaded plugin files outside the plugins directory. Because the official Docker image runs as root, an authenticated attacker overwrites a root-owned startup file and achieves remote code execution as root. Self-registration for an account may be possible.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.