SQL Parsing Vulnerability in Python's sqlparse Module
CVE-2026-59893

7.5HIGH

Key Information:

Vendor

Andialbrecht

Status
Sqlparse
Vendor
CVE Published:
17 August 2026

What is CVE-2026-59893?

The sqlparse module, a widely used SQL parser for Python, is susceptible to a performance issue prior to version 0.6.0. Specifically, the SQL_REGEX in sqlparse/keywords.py, coupled with inefficient looping in sqlparse/lexer.py, leads to excessive CPU consumption when dealing with unmatched dollar-quoted literals and multiline comments. This can severely degrade application performance, especially in applications that rely heavily on complex SQL queries. Users are urged to upgrade to version 0.6.0 or later to eliminate this problem and enhance system stability.

Affected Version(s)

sqlparse < 0.6.0

References

https://github.com/andialbrecht/sqlparse/security/advisor...
x_refsource_CONFIRM
https://github.com/andialbrecht/sqlparse/commit/d1d806027...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.