High
sqlparse — security advisory
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.
- Products
- sqlparse
- Affected versions
- 0.4.2-1, 0.4.2-1+deb12u1, 0.4.4-1, 0.5.0-1, 0.5.1-1, 0.5.1-2, 0.5.2-1, 0.5.3-1, 0.5.4-1, 0.5.5-1, 0.5.5-2
- Fixed versions
- Not specified
- CVEs
- CVE-2026-71491
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 04:07 UTC · Revision 1
Source evidence
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.
osv:DEBIAN-CVE-2026-71491
sqlparse
Fixed versions: Not specified
sqlparse
Fixed versions: Not specified
sqlparse
Fixed versions: Not specified
Complete source record
{
"id": "6da43bc1496699118d7d2b9a637d06d9f6c7660c83f65d22d1e30733e8da278c",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-71491",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-71491",
"summary": "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.",
"evidence": "osv:DEBIAN-CVE-2026-71491",
"products": [
{
"name": {
"value": "sqlparse",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.4.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.4.2-1+deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "0.4.4-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.5.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.5.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.5.1-2",
"evidence": "/affected/0/versions"
},
{
"value": "0.5.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.5.3-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.5.4-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.5.5-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.5.5-2",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
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"evidence": "/affected/1/package/name"
},
"prerequisites": [],
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"affected_versions": [
{
"value": "0.5.3-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.5.4-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.5.5-1",
"evidence": "/affected/1/versions"
},
{
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"evidence": "/affected/1/versions"
}
]
},
{
"name": {
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"evidence": "/affected/2/package/name"
},
"prerequisites": [],
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"affected_versions": [
{
"value": "0.5.3-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.5.4-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.5.5-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.5.5-2",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-71491",
"aliases": [
"DEBIAN-CVE-2026-71491"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "sqlparse",
"purl": "pkg:deb/debian/sqlparse?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"0.4.2-1",
"0.4.2-1+deb12u1",
"0.4.4-1",
"0.5.0-1",
"0.5.1-1",
"0.5.1-2",
"0.5.2-1",
"0.5.3-1",
"0.5.4-1",
"0.5.5-1",
"0.5.5-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-71491.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "sqlparse",
"purl": "pkg:deb/debian/sqlparse?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"0.5.3-1",
"0.5.4-1",
"0.5.5-1",
"0.5.5-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-71491.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "sqlparse",
"purl": "pkg:deb/debian/sqlparse?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"0.5.3-1",
"0.5.4-1",
"0.5.5-1",
"0.5.5-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-71491.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-24T09:47:31.880166399Z",
"provider": "osv",
"upstream": [
"CVE-2026-71491"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-71491"
]
},
"related_cves": [
{
"value": "CVE-2026-71491",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 429006,
"published_at": "2026-08-17T18:18:12.12+00:00"
}