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CVE-2026-65321 is a SQL injection vulnerability in PyAthena affecting versions prior to 3.35.4. The flaw is in DefaultParameterFormatter.format(), which routes DELETE and CTAS statements to the _escape_hive function. That function escapes single quotes with backslashes instead of doubling them. Because Athena and Trino do not interpret backslashes as escape characters inside string literals, attacker-controlled input containing a single quote can prematurely terminate the intended string literal and append arbitrary SQL. The issue enables injection into affected query construction paths for DELETE and CTAS statements and can alter query semantics, including attacker control over CTAS destination and content.
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No public exploit code observed for this vulnerability.
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Cross-references every affected SKU, including bundled OEM variants.
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