CVE-2023-30608 is a medium-severity (CVSS 5.5) CWE-1333 vulnerability in sqlparse. A fix is available for sqlparse — see the affected versions and patch details below.
Parser contains an inefficient regular expression in sqlparse
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2023-30608.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
sqlparseReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
sqlparse is a non-validating SQL parser module for Python. In affected versions the SQL parser contains a regular expression that is vulnerable to ReDoS (Regular Expression Denial of Service). This issue was introduced by commit e75e358. The vulnerability may lead to Denial of Service (DoS). This issues has been fixed in sqlparse 0.4.4 by commit c457abd5f. Users are advised to upgrade. There are no known workarounds for this issue.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | sqlparse | ≥ 0.1.15&&< 0.4.4 | 0.4.4pip install --upgrade 'sqlparse==0.4.4' |
Affected Products
debian linuxdebiansqlparsesqlparse_projectDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for sqlparse, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update sqlparse to 0.4.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-30608 is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
| Product | Fixed in | Advisory |
|---|---|---|
| Red Hat Satellite 6.14 for RHEL 8 | python-sqlparse-0:0.4.4-1.el8pc | RHSA-2023:6818 |
| RHUI 4 for RHEL 8 | python-sqlparse-0:0.4.4-1.0.1.el8ui | RHSA-2023:4591 |
Frequently Asked Questions
Is CVE-2023-30608 in your dependencies?
Find it across PyPI, including transitive dependencies.