Threats Tagged 'cve-2026-59894'

This update for python-sqlparse fixes the following issues: - CVE-2026-54284: high algorithm complexity when parsing SQL payloads with hundreds of nesting levels can lead to denial of service via excessive resource consumption (bsc#1275459). - CVE-2026-59893: quadratic complexity when processing unmatched dollar-quoted literal and multiline-comment delimiters can lead to denial of service (bsc#1275461). - CVE-2026-59894: improper backlash escaping allows for injection of Python or PHP code via a crafted SQL input (bsc#1275460). - CVE-2026-71491: quadratic complexity in `group_comments` when processing comment-only statements can lead to denial of services (bsc#1275466). - Incomplete GHSA-27jp-wm6q-gp25 patch (bsc#1268597).

CVE-2026-54284 is a high-severity vulnerability in the Python sqlparse module prior to version 0.6.0. The issue arises from inefficient algorithmic complexity during TokenList construction and string conversion, causing quadratic CPU consumption when using sqlparse.parse(), sqlparse.format(), and sqlparse.split(). This inefficiency is due to repeatedly flattening nested token subtrees. The vulnerability is fixed in sqlparse version 0.6.0.

sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, sqlparse/filters/output.py fails to escape existing backslashes before quotes in sqlparse.format output_format='python' and output_format='php' and the corresponding sqlformat -l modes, allowing crafted SQL to terminate the generated string and inject Python or PHP code when a downstream consumer executes or imports the generated source. This issue is fixed in version 0.6.0.