CVE-2026-54284
Publication date 17 August 2026
Last updated 23 September 2026
Ubuntu priority
Description
sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, TokenList construction and string conversion in sqlparse/sql.py repeatedly flatten nested token subtrees constructed by group_parenthesis and group_case, causing quadratic CPU consumption through sqlparse.parse(), sqlparse.format(), and sqlparse.split() before depth and token limits terminate processing. This issue is fixed in version 0.6.0.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| sqlparse | 26.04 LTS resolute |
Fixed 0.5.4-1ubuntu0.1
|
| 24.04 LTS noble |
Fixed 0.4.4-1ubuntu0.2
|
|
| 22.04 LTS jammy |
Fixed 0.4.2-1ubuntu0.22.04.3
|
|
| 20.04 LTS focal |
Fixed 0.2.4-3ubuntu0.1+esm1
|
|
| 18.04 LTS bionic |
Fixed 0.2.4-0.1ubuntu0.1+esm1
|
|
| 16.04 LTS xenial |
Fixed 0.1.18-1ubuntu0.1~esm1
|
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CVSS version: CVSS v4.0
Base score
8.7 · High
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
References
Related Ubuntu Security Notices (USN)
- USN-8808-1
- SQL parse vulnerabilities
- 23 September 2026