UnratedFix available

UBUNTU-CVE-2026-54284

Type: advisorySource: OSV1 source record

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.

Announced 17 Aug 2026Source revision 1

Original source ↗

UBUNTU-CVE-2026-54284

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:UBUNTU-CVE-2026-54284

sqlparse

Source reference: /affected/0/package/name

Affected versions: 0.1.13-2ubuntu2
Source reference: /affected/0/versions
0.1.18-1
Source reference: /affected/0/versions
Fixed versions: 0.1.18-1ubuntu0.1~esm1
Source reference: /affected/0/ranges
Prerequisites: Not stated in this record

sqlparse

Source reference: /affected/1/package/name

Affected versions: 0.2.2-1
Source reference: /affected/1/versions
0.2.4-0.1
Source reference: /affected/1/versions
0.2.4-0.1ubuntu0.1
Source reference: /affected/1/versions
Fixed versions: 0.2.4-0.1ubuntu0.1+esm1
Source reference: /affected/1/ranges
Prerequisites: Not stated in this record

sqlparse

Source reference: /affected/2/package/name

Affected versions: 0.2.4-1
Source reference: /affected/2/versions
0.2.4-1build1
Source reference: /affected/2/versions
0.2.4-2
Source reference: /affected/2/versions
0.2.4-3
Source reference: /affected/2/versions
0.2.4-3ubuntu0.1
Source reference: /affected/2/versions
Fixed versions: 0.2.4-3ubuntu0.1+esm1
Source reference: /affected/2/ranges
Prerequisites: Not stated in this record

sqlparse

Source reference: /affected/3/package/name

Affected versions: 0.4.1-1ubuntu1
Source reference: /affected/3/versions
0.4.2-1
Source reference: /affected/3/versions
0.4.2-1ubuntu0.22.04.1
Source reference: /affected/3/versions
0.4.2-1ubuntu0.22.04.2
Source reference: /affected/3/versions
Fixed versions: 0.4.2-1ubuntu0.22.04.3
Source reference: /affected/3/ranges
Prerequisites: Not stated in this record

sqlparse

Source reference: /affected/4/package/name

Affected versions: 0.4.2-1ubuntu1
Source reference: /affected/4/versions
0.4.4-1
Source reference: /affected/4/versions
0.4.4-1ubuntu0.1
Source reference: /affected/4/versions
Fixed versions: 0.4.4-1ubuntu0.2
Source reference: /affected/4/ranges
Prerequisites: Not stated in this record

sqlparse

Source reference: /affected/5/package/name

Affected versions: 0.5.3-1
Source reference: /affected/5/versions
0.5.4-1
Source reference: /affected/5/versions
Fixed versions: 0.5.4-1ubuntu0.1
Source reference: /affected/5/ranges
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

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        ]
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    ],
    "package": {
      "name": "sqlparse",
      "purl": "pkg:deb/ubuntu/sqlparse?arch=source&distro=esm-infra-legacy%2Fxenial",
      "ecosystem": "Ubuntu:Pro:16.04:LTS"
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    "versions": [
      "0.1.13-2ubuntu2",
      "0.1.18-1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54284.json"
    },
    "ecosystem_specific": {
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      "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
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    }
  },
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      {
        "type": "ECOSYSTEM",
        "events": [
          {
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      "name": "sqlparse",
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    "database_specific": {
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    },
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        },
        {
          "binary_name": "sqlformat",
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      "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
    }
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      "ecosystem": "Ubuntu:22.04:LTS"
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        {
          "binary_name": "sqlformat",
          "binary_version": "0.4.2-1ubuntu0.22.04.3"
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      "availability": "No subscription required"
    }
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      "purl": "pkg:deb/ubuntu/sqlparse?arch=source&distro=noble",
      "ecosystem": "Ubuntu:24.04:LTS"
    },
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      "0.4.2-1ubuntu1",
      "0.4.4-1",
      "0.4.4-1ubuntu0.1"
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          {
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          },
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      "0.5.4-1"
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          "binary_version": "0.5.4-1ubuntu0.1"
        }
      ],
      "availability": "No subscription required"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #5797 · Revision 1
Added to Heist Feed: Sat, 24 Oct 2026 22:13:58 GMT
Publisher date: Mon, 17 Aug 2026 18:17:00 GMT

Read the original announcement