Fluid Attacks Database

Description

sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, TokenList construction and string conversion in sqlparse/sql.py repeatedly flatten nested token subtrees constructed by group_parenthesis and group_case, causing quadratic CPU consumption through sqlparse.parse(), sqlparse.format(), and sqlparse.split() before depth and token limits terminate processing. This issue is fixed in version 0.6.0.

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem	Component	Affected version	Patched versions
debian 13	sqlparse	=0.5.3-1 \|\| =0.5.4-1 \|\| =0.5.5-1 \|\| =0.5.5-2	-
pypi	sqlparse	>=0 <0.6.0	0.6.0
debian 14	sqlparse	=0.5.3-1 \|\| =0.5.4-1 \|\| =0.5.5-1 \|\| =0.5.5-2	-
debian 12	sqlparse	=0.4.2-1 \|\| =0.4.2-1+deb12u1 \|\| =0.4.4-1 \|\| =0.5.0-1 \|\| =0.5.1-1 \|\| =0.5.1-2 \|\| =0.5.2-1 \|\| =0.5.3-1 \|\| =0.5.4-1 \|\| =0.5.5-1 \|\| =0.5.5-2	-

Aliases

1. CVE-2026-542842. NVD-2026-542843. OSV-DEBIAN-2026-542844. OSV-2026-542845. GHSA-pwgv-4x5q-6m9f6. GCVE-2026-542847. SECURITY-TRACKER-CVE-2026-54284

References

1. https://github.com/andialbrecht/sqlparse/security/advisories/GHSA-pwgv-4x5q-6m9f2. https://github.com/andialbrecht/sqlparse/commit/939b129e24c0ad5d51368b1aa72fffcaca76f06f

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