CVE-2026-71491

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Source
https://cve.org/CVERecord?id=CVE-2026-71491
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-71491.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-71491
Aliases
Downstream
Related
Published
2026-08-17T17:16:48Z
Modified
2026-09-10T18:27:09Z
Severity
  • 8.7 (High) CVSS_V4 - 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 CVSS Calculator
Summary
sqlparse: Quadratic O(n²) DoS in group_comments
Details

sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, group_comments in sqlparse/engine/grouping.py repeatedly rescans comment-only statements before the MAX_GROUPING_TOKENS guard, causing quadratic CPU consumption through sqlparse.parse() and sqlparse.format(sql, strip_comments=True). This issue is fixed in version 0.6.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-400",
        "CWE-407"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71491.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
ef2012a5eeb491e604dea2b00d516904a3830c87
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-2026-71491.json"