CVE-2026-71491CWE-400CWE-407denial-of-service

CVE-2026-71491

published August 17, 2026

CVSS
8.7
EPSS
0%
Percentile
17.1
In the wild
Unconfirmed
What it is

sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, group_comments in sqlparse/engine/grouping.py repeatedly rescans comment-only statements before the MAX_GROUPING_TOKENS guard, causing quadratic CPU consumption through sqlparse.parse() and sqlparse.format(sql, strip_comments=True). This issue is fixed in version 0.6.0.

The record
Technical detail
CVSS
8.7 · NONE
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00263 · 17.1th percentile
Weaknesses
CWE-400 · Uncontrolled Resource Consumption; CWE-407 · Inefficient Algorithmic Complexity
Published
2026-08-17T22:18Z
References (2)
https://github.com/andialbrecht/sqlparse/commit/ef2012a5eeb491e604dea2b00d516904a3830c87 · [email protected]https://github.com/andialbrecht/sqlparse/security/advisories/GHSA-f2ff-p2ww-7p4p · [email protected]
EPSS history
Timeline
  • 17 AUG 17:16Z
    sqlparse: Quadratic O(n²) DoS in group_comments
    cvelistv5