CVE-2023-30608 — sqlparse is a non-validating SQL parser module for Python

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

01What is this vulnerability?

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…

02Affected products

Vendor	Product	Versions
andialbrecht	sqlparse	>= 0.1.15, < 0.4.4

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-04-18T21:32:11.145Z
• Last modified: 2025-11-03T21:48:07.853Z

09References

• github.com — https://github.com/andialbrecht/sqlparse/security/advisories/GHSA-rrm6-wvj7-cwh2
• github.com — https://github.com/andialbrecht/sqlparse/commit/c457abd5f097dd13fb21543381e7cfaf…
• github.com — https://github.com/andialbrecht/sqlparse/commit/e75e35869473832a1eb67772b1adfee2…
• owasp.org — https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_R…
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/05/msg00017.html