SQLite 3.41 Core Parser src/expr.c sqlite3ExprListDelete use after free

Summaryinfo

A vulnerability, which was classified as critical, was found in SQLite 3.41. Impacted is the function sqlite3ExprListDelete of the file src/expr.c of the component Core Parser. Executing a manipulation can lead to use after free. This vulnerability is handled as CVE-2026-51303. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in SQLite 3.41 and classified as critical. This vulnerability affects the function sqlite3ExprListDelete of the file src/expr.c of the component Core Parser. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A use-after-free (UAF) vulnerability was discovered in the core parsing component of SQLite 3.41. The flaw occurs because the program frees an ExprList object via sqlite3ExprListDelete and then subsequently accesses the dangling pointer of the released object. A remote adversary can supply specially crafted SQL queries to trigger this vulnerability during SQL statement parsing. Successful exploitation may result in application crash (denial of service), sensitive memory information leakage, and in some scenarios, arbitrary code execution on the affected host.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-51303 since 06/07/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/27/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Name

• SQLite

Version

• 3.41

License

• free

Website

• Product: https://github.com/sqlite/sqlite/

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