{
  "variant_id": "CVE-2026-40899-variant-analysis",
  "created_at": "2026-05-25T14:00:00Z",
  "variant_summary": "Systematic variant analysis of CVE-2026-40899 blocklist bypass. Eight distinct payloads were tested against the fixed version (v2.10.21), including alternate datasource types (mariadb, oracle, pg), direct jdbcUrl mode, double URL encoding, case variations, parent-field property names, and alternate endpoints (save). None bypassed the fix. The fix (@JsonIgnore on illegalParameters in 9 datasource type classes) was confirmed complete for this vulnerability class via source-code audit and a standalone Java Jackson deserialization test.",
  "relation": "newer_version_sibling",
  "origin_kind": "pruva_variant",
  "repository": "https://github.com/dataease/dataease",
  "submitted_target": {
    "target_kind": "docker_image",
    "version": "v2.10.20",
    "display": "registry.cn-qingdao.aliyuncs.com/dataease/dataease:v2.10.20"
  },
  "variant_target": {
    "target_kind": "docker_image",
    "version": "v2.10.21",
    "display": "registry.cn-qingdao.aliyuncs.com/dataease/dataease:v2.10.21"
  },
  "same_root_cause_confidence": "high",
  "same_surface_confidence": "medium",
  "claimed_surface": "POST /de2api/datasource/validate (or /save) with Base64-encoded configuration JSON containing illegalParameters override",
  "validated_surface": "POST /de2api/datasource/validate (or /save) with 8 distinct variant payloads against fixed v2.10.21",
  "required_entrypoint_kind": "http_api",
  "required_entrypoint_detail": "POST /de2api/datasource/validate or /de2api/datasource/save with a JSON body containing a Base64-encoded datasource configuration object",
  "attacker_controlled_input": "Base64-encoded JSON configuration string inside the 'configuration' field of the request body",
  "trigger_path": "DatasourceServer.validate() -> checkDatasourceStatus() -> ProviderFactory.getProvider() -> CalciteProvider.getConnection() -> JsonUtil.parseObject() -> <Type>.getJdbc() -> illegalParameters check",
  "observed_impact_class": "arbitrary_file_read",
  "exploitability_confidence": "none_found",
  "evidence_scope": "source_audit_and_jackson_unit_test",
  "runtime_manifest_present": false,
  "end_to_end_target_reached": false,
  "inferred": false,
  "file_path": "core/core-backend/src/main/java/io/dataease/datasource/type/Mysql.java",
  "line_start": 15,
  "line_end": 16,
  "secondary_anchors": [
    {
      "file_path": "core/core-backend/src/main/java/io/dataease/datasource/type/Impala.java",
      "line_start": 17,
      "line_end": 18
    },
    {
      "file_path": "core/core-backend/src/main/java/io/dataease/datasource/type/Pg.java",
      "line_start": 17,
      "line_end": 18
    },
    {
      "file_path": "core/core-backend/src/main/java/io/dataease/datasource/type/Sqlserver.java",
      "line_start": 17,
      "line_end": 18
    },
    {
      "file_path": "core/core-backend/src/main/java/io/dataease/datasource/type/Db2.java",
      "line_start": 15,
      "line_end": 16
    },
    {
      "file_path": "core/core-backend/src/main/java/io/dataease/datasource/type/H2.java",
      "line_start": 16,
      "line_end": 17
    },
    {
      "file_path": "core/core-backend/src/main/java/io/dataease/datasource/type/CK.java",
      "line_start": 33,
      "line_end": 34
    },
    {
      "file_path": "core/core-backend/src/main/java/io/dataease/datasource/type/Redshift.java",
      "line_start": 20,
      "line_end": 21
    },
    {
      "file_path": "core/core-backend/src/main/java/io/dataease/datasource/type/Mongo.java",
      "line_start": 15,
      "line_end": 16
    },
    {
      "file_path": "core/core-backend/src/main/java/io/dataease/datasource/provider/CalciteProvider.java",
      "line_start": 406,
      "line_end": 442
    }
  ],
  "review_scope_paths": [
    "core/core-backend/src/main/java/io/dataease/datasource/type/",
    "core/core-backend/src/main/java/io/dataease/datasource/provider/CalciteProvider.java",
    "core/core-backend/src/main/java/io/dataease/datasource/server/DatasourceServer.java",
    "sdk/extensions/extensions-datasource/src/main/java/io/dataease/extensions/datasource/vo/DatasourceConfiguration.java",
    "sdk/extensions/extensions-datasource/src/main/java/io/dataease/extensions/datasource/vo/Configuration.java"
  ],
  "artifact_refs": {
    "variant_manifest": "vuln_variant/variant_manifest.json",
    "validation_verdict": "vuln_variant/validation_verdict.json",
    "runtime_manifest": null,
    "repro_log": "logs/variant_repro_run.log",
    "root_cause_equivalence": null,
    "reproducer": ["vuln_variant/reproduction_steps.sh", "vuln_variant/test_variants_fixed.sh"]
  }
}