Vulnerability · Published May 15, 2026 · Assigned by apache
CVE-2026-35194Apache Flink: Remote code execution via SQL injection in code generation
High 8.1
In plain English
A high-severity code injection in Apache Flink from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official description
Code injection in SQL code generation in Apache Flink 1.15.0 through 1.20.x and 2.0.0 through 2.x allows authenticated users with query submission privileges to execute arbitrary code on TaskManagers via maliciously crafted SQL queries. The vulnerability affects JSON functions (1.15.0+) and LIKE expressions with ESCAPE clauses (1.17.0+). User-controlled strings are interpolated into generated Java code without proper escaping, allowing attackers to break out of string literals and inject arbitrary expressions. Users are recommended to upgrade to either version 1.20.4, 2.0.2, 2.1.2 or 2.2.1, which fixes this issue.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | org.apache.flink:flink-table-api-java | 1.20.4 | GHSA-2f54-v4hm-fx73 |
| Maven | org.apache.flink:flink-table-api-java | 2.0.2 | GHSA-2f54-v4hm-fx73 |
| Maven | org.apache.flink:flink-table-api-java | 2.1.2 | GHSA-2f54-v4hm-fx73 |
| Maven | org.apache.flink:flink-table-api-java | 2.2.1 | GHSA-2f54-v4hm-fx73 |
| Maven | org.apache.flink:flink-table-planner_2.12 | 1.20.4 | GHSA-2f54-v4hm-fx73 |
| Maven | org.apache.flink:flink-table-planner_2.12 | 2.0.2 | GHSA-2f54-v4hm-fx73 |
| Maven | org.apache.flink:flink-table-planner_2.12 | 2.1.2 | GHSA-2f54-v4hm-fx73 |
| Maven | org.apache.flink:flink-table-planner_2.12 | 2.2.1 | GHSA-2f54-v4hm-fx73 |
| Maven | org.apache.flink:flink-table-runtime | 1.20.4 | GHSA-2f54-v4hm-fx73 |
| Maven | org.apache.flink:flink-table-runtime | 2.0.2 | GHSA-2f54-v4hm-fx73 |
| Maven | org.apache.flink:flink-table-runtime | 2.1.2 | GHSA-2f54-v4hm-fx73 |
| Maven | org.apache.flink:flink-table-runtime | 2.2.1 | GHSA-2f54-v4hm-fx73 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Flink | 1.15.0 – before 1.20.4,2.0.2,2.1.2,2.2.1 |
Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N