Vulnerability · Published Aug 17, 2026 · Assigned by GitHub_M
CVE-2026-59893sqlparse: Inefficient Regex Handling of Dollar-Quoted SQL Literals Leads to ReDoS (Denial of Service)
High 7.5
In plain English
A high-severity regular-expression denial of service in sqlparse from andialbrecht. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, SQL_REGEX in sqlparse/keywords.py and the per-position loop in sqlparse/lexer.py repeatedly scan unmatched dollar-quoted literal and multiline-comment delimiters, causing quadratic CPU consumption through sqlparse.parse(), sqlparse.format(), and sqlparse.split(). This issue is fixed in version 0.6.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | sqlparse | no fix listed | DEBIAN-CVE-2026-59893 |
| Debian:13 | sqlparse | no fix listed | DEBIAN-CVE-2026-59893 |
| Debian:14 | sqlparse | no fix listed | DEBIAN-CVE-2026-59893 |
| PyPI | sqlparse | 0.6.0 | PYSEC-2026-3698 |
| PyPI | sqlparse | 0.6.0 | GHSA-prg7-hcfm-mfcr |
| Ubuntu:22.04:LTS | sqlparse | 0.4.2-1ubuntu0.22.04.3 | UBUNTU-CVE-2026-59893 |
| Ubuntu:22.04:LTS | sqlparse | 0.4.2-1ubuntu0.22.04.3 | USN-8808-1 |
| Ubuntu:24.04:LTS | sqlparse | 0.4.4-1ubuntu0.2 | USN-8808-1 |
| Ubuntu:24.04:LTS | sqlparse | 0.4.4-1ubuntu0.2 | UBUNTU-CVE-2026-59893 |
| Ubuntu:26.04:LTS | sqlparse | 0.5.4-1ubuntu0.1 | USN-8808-1 |
| Ubuntu:26.04:LTS | sqlparse | 0.5.4-1ubuntu0.1 | UBUNTU-CVE-2026-59893 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| andialbrecht | sqlparse | < 0.6.0 |
Weakness: CWE-1333 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H