sqlparse: Inefficient Regex Handling of Dollar-Quoted SQL Literals Leads to ReDoS (Denial of Service)

Summarysqlparse contains a Regular Expression Denial of Service ReDoS vulnerability in its dollar-quoted SQL literal lexer. The regex pattern at sqlparse/keywords.py:33 uses a backreference \1 to match closing dollar-quote delimiters, causing On² CPU complexity when processing inputs containing...

PT-2026-76735

Name of the Vulnerable Software and Affected Versions sqlparse versions prior to 0.6.0 Description sqlparse contains a Regular Expression Denial of Service ReDoS issue where the lexer repeatedly scans unmatched dollar-quoted literals and multiline-comment delimiters. This occurs because the regex...