Code execution via unescaped output-filter backslashes
Published Aug 17, 2026 · Updated Aug 17, 2026
Code injection in sqlparse before 0.6.0 allows attackers to execute Python or PHP code through crafted SQL formatter input. The Python and PHP filters in sqlparse/filters/output.py escape quotes without first escaping existing backslashes, so an input backslash can neutralize a quote escape and close the generated string. Exploitation requires an opt-in output_format mode or sqlformat -l workflow and execution or import of the generated source; ordinary parsing and formatting alone do not execute code.
Summary
What happened
Code injection in sqlparse before 0.6.0 allows attackers to execute Python or PHP code through crafted SQL formatter input. The Python and PHP filters in sqlparse/filters/output.py escape quotes without first escaping existing backslashes, so an input backslash can neutralize a quote escape and close the generated string. Exploitation requires an opt-in output_format mode or sqlformat -l workflow and execution or import of the generated source; ordinary parsing and formatting alone do not execute code.
The record
- CVE
- CVE-2026-59894
- Published
- Aug 17, 2026
- Updated
- Aug 17, 2026
- Vendor
- Andi Albrecht
- Product
- sqlparse
- Classifications
- CWE-94, T1059.006
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 17, 2026CVE publishedPublication date reported by the CVE source.
- Aug 17, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 0.6.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- output_format_snippet_injection proof of conceptfunctional · validated
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Technologies
Your stack
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Your stack
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