unauthenticated-opencode-web: OpenCode Web - Unauthenticated Access

2026-05-09 OpenCode Web PoC Public

Description

Unauthenticated network access to the OpenCode web interface was detected. When the OpenCode web server is started without setting the OPENCODE_SERVER_PASSWORD environment variable, the server is completely unsecured.

PoC

id: unauthenticated-opencode-web

info:
  name: OpenCode Web - Unauthenticated Access
  author: Kazgangap
  severity: medium
  description: |
    Unauthenticated network access to the OpenCode web interface was detected. When the OpenCode web server is started without setting the OPENCODE_SERVER_PASSWORD environment variable, the server is completely unsecured.
  reference:
    - https://opencode.ai/docs/tr/web/
  metadata:
    verified: true
    max-request: 1
    vendor: opencode
    product: opencode
    shodan-query: http.html:"opencode"
    fofa-query: body="opencode"
  tags: config,unauth,opencode,misconfig,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/Lw/session/"

    redirects: true
    max-redirects: 2

    matchers:
      - type: dsl
        dsl:
          - 'contains_all(body, "<title>OpenCode</title>", "opencode-theme-id")'
          - 'status_code == 200'
        condition: and
# digest: 490a00463044022005f252aac448612ba8ef206eb62d56214998c348e009255c589bd2c80f079bb502207d728ba61f68b7de922f7d8cfbf41a8649de64ac9196a6d512d5bbe7ebf210f2:922c64590222798bb761d5b6d8e72950

# Visit https://trap.biu.life/ to view exploit trends for this vulnerability.

References

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