CVE-2026-84305

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Source
https://cve.org/CVERecord?id=CVE-2026-84305
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-84305.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-84305
Aliases
Downstream
Related
Published
2026-09-01T18:33:10Z
Modified
2026-09-15T17:11:44Z
Severity
  • 5.1 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
sqlparse: Reindentation of tuple lists causes near-cap quadratic CPU consumption
Details

sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, sqlparse.format(sql, reindent=True) and sqlformat --reindent route attacker-controlled parenthesized tuple lists through ReindentFilter._get_offset() in sqlparse/filters/reindent.py, where _flatten_up_to_token() repeatedly rebuilds and joins the statement prefix. Thousands of offset calculations walk an expanding token tree, producing quadratic CPU consumption for inputs that remain below MAX_GROUPING_TOKENS and causing request delays, reduced throughput, or worker starvation. This issue is fixed in version 0.6.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-407"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84305.json"
}
References

Affected packages

Git / github.com/andialbrecht/sqlparse

Affected ranges

Type
GIT
Repo
https://github.com/andialbrecht/sqlparse
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
a51df6d9e2d31b44be9adb6bc8732517db6bf96b
Fixed
2f40da99b50d81135aecf96f6b08fcfa338a96de
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.6.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

0.*
0.1.0
0.1.1
0.1.10
0.1.11
0.1.12
0.1.13
0.1.14
0.1.15
0.1.16
0.1.17
0.1.18
0.1.2
0.1.3
0.1.5
0.1.6
0.1.7
0.1.8
0.1.9
0.2.0
0.2.1
0.2.2
0.2.3
0.2.4
0.3.0
0.3.1
0.4.0
0.4.1
0.4.2
0.4.3
0.4.4
0.5.0
0.5.1
0.5.2
0.5.3
0.5.4
0.5.5

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-84305.json"