CVE-2020-13921 — **Resolved** Only when using H2/MySQL/TiDB as Apache SkyWalking storage, there is a SQL injection vulnerability in the wildcard query cases

Matched remediation archetype

SQL and data-query injection

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

• Trace request, message, file, and stored values into SQL, ORM query fragments, filters, sort expressions, and other data-query languages.
• Inventory database roles, reachable schemas, multi-tenant boundaries, and whether stacked or administrative operations are enabled.
• Check both direct queries and second-order use of previously stored values.

Remediate safely

• Use parameterized queries or safe query builders for all values; map identifiers and operators through explicit allowlists.
• Remove raw query concatenation and give the application account only the tables and operations it requires.
• Update affected data-access components and add regression tests for query structure preservation with inert edge-case inputs.