{"id":"CVE-2026-34825","aliases":["GHSA-vx58-fwwq-5g8j"],"url":"https://o3.security/vulnerability/CVE-2026-34825","summary":"NocoBase Has SQL Injection via template variable substitution in workflow SQL node","details":"## Summary\n\nNocoBase <= 2.0.8 `plugin-workflow-sql` substitutes template variables directly into raw SQL strings via `getParsedValue()` without parameterization or escaping. Any user who triggers a workflow containing a SQL node with template variables from user-controlled data can inject arbitrary SQL.\n\n## Affected Versions\n\n- Affected: all versions through 2.0.8\n\n## Details\n\nThe `SQLInstruction` in `packages/plugins/@nocobase/plugin-workflow-sql/src/server/SQLInstruction.ts` line 28 processes SQL templates:\n\n```typescript\n// SQLInstruction.ts:28\nconst sql = processor.getParsedValue(node.config.sql || '', node.id).trim();\n```\n\nThen executes the resulting string directly:\n\n```typescript\n// SQLInstruction.ts:35\nconst [result] = await collectionManager.db.sequelize.query(sql, {\n  transaction: this.workflow.useDataSourceTransaction(dataSourceName, processor.transaction),\n});\n```\n\n`getParsedValue()` performs simple string substitution of `{{$context.data.fieldName}}` placeholders with values from the workflow trigger data. No escaping, quoting, or parameterized binding is applied.\n\nWhen an admin creates a SQL node with a template like:\n```sql\nSELECT * FROM users WHERE nickname = '{{$context.data.nickname}}'\n```\n\nAny user who triggers the workflow with a crafted value can break out of the string literal and inject arbitrary SQL.\n\n## Proof of Concept\n\n1. Login as admin\n2. Create a collection-trigger workflow on the `users` table (mode: after create)\n3. Add a SQL node with:\n```sql\nSELECT id, nickname, email FROM users WHERE nickname = '{{$context.data.nickname}}'\n```\n4. Enable the workflow\n5. Create a user with nickname set to: `' UNION SELECT 1,version(),current_user --`\n6. Check execution result:\n\n```json\n[\n  {\n    \"id\": 1,\n    \"nickname\": \"PostgreSQL 16.13 (Debian 16.13-1.pgdg13+1) on x86_64-pc-linux-gnu...\",\n    \"email\": \"nocobase\"\n  }\n]\n```\n\nThe injected UNION SELECT returned the database version and current database user.\n\n## Impact\n\nFull database read/write access through SQL injection. An attacker who can trigger a workflow with a SQL node containing template variables from user-controlled data can extract credentials, modify records, or drop tables. The severity depends on the database user's privileges (full superuser access in the default Docker deployment).\n\n## Suggested Fix\n\nUse parameterized queries. Replace direct string substitution with Sequelize bind parameters:\n\n```diff\n// SQLInstruction.ts\n- const sql = processor.getParsedValue(node.config.sql || '', node.id).trim();\n+ const { sql, bind } = processor.getParsedValueAsParams(node.config.sql || '', node.id);\n  const [result] = await collectionManager.db.sequelize.query(sql, {\n+   bind,\n    transaction: ...\n  });\n```","published":"2026-04-02T19:06:07.592Z","modified":"2026-08-12T03:51:19.015249395Z","cvss":null,"epss":{"score":0.00406,"percentile":0.33662,"asOf":"2026-08-14"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@nocobase/plugin-workflow-sql","fixedVersion":"2.0.30"}],"fix":{"url":"https://github.com/nocobase/nocobase/commit/75da3dddc4aba739c398f7072725dcf7f5487f5c","label":"nocobase/nocobase@75da3dd"},"references":[{"type":"WEB","url":"https://github.com/nocobase/nocobase/releases/tag/v2.0.30"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34825.json"},{"type":"ADVISORY","url":"https://github.com/nocobase/nocobase/security/advisories/GHSA-vx58-fwwq-5g8j"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34825"},{"type":"FIX","url":"https://github.com/nocobase/nocobase/commit/75da3dddc4aba739c398f7072725dcf7f5487f5c"},{"type":"PACKAGE","url":"https://github.com/nocobase/nocobase"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:19.015249395Z"}}