Vulnerability-Lookup

SUSE-SU-2026:3978-1

Vulnerability from csaf_suse - Published: 2026-09-04 09:19 - Updated: 2026-09-17 16:45

Summary

Security update for python-sqlparse

Severity

Moderate

Notes

Title of the patch: Security update for python-sqlparse

Description of the patch: This update for python-sqlparse fixes the following issue: - CVE-2026-84305: Reindentation of tuple lists causes near-cap quadratic CPU consumption (bsc#1278097).

Patchnames: SUSE-2026-3978,SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2026-3978

CVE-2026-84305

4 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

Recommended 1 product

Product	Identifier	Version	Remediation
Unresolved product id: SUSE Linux Enterprise Module for Package Hub 15 SP7:python2-sqlparse-0:0.2.4-150100.6.14.1.noarch		—	Vendor Fix

Threats

Impact moderate

References

8 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/s…	self
https://www.suse.com/support/update/announcement/…	self
https://lists.suse.com/pipermail/sle-security-upd…	self
https://bugzilla.suse.com/1278097	self
https://www.suse.com/security/cve/CVE-2026-84305/	self
https://www.suse.com/security/cve/CVE-2026-84305	external
https://bugzilla.suse.com/1278097	external

JSON

To clipboard

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}

CVE-2026-84305 (GCVE-0-2026-84305)

Vulnerability from cvelistv5 – Published: 2026-09-01 18:33 – Updated: 2026-09-01 19:12

Title

sqlparse: Reindentation of tuple lists causes near-cap quadratic CPU consumption

Summary

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.

Severity

5.1 (Medium)


                        
                          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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-01 19:12 UTC

CWE

CWE-407 - Inefficient Algorithmic Complexity

Assigner

GitHub_M mitre root Scorecard

References

3 references

URL	Tags
https://github.com/andialbrecht/sqlparse/security…	x_refsource_CONFIRM
https://github.com/andialbrecht/sqlparse/commit/a…	x_refsource_MISC
https://github.com/andialbrecht/sqlparse/releases…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
andialbrecht	sqlparse	Affected: < 0.6.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-84305",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-01T19:12:32.847258Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-01T19:12:52.039Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/andialbrecht/sqlparse/security/advisories/GHSA-cfqr-cjx5-5jcm"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "sqlparse",
          "vendor": "andialbrecht",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.6.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-407",
              "description": "CWE-407: Inefficient Algorithmic Complexity",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-01T18:33:10.969Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/andialbrecht/sqlparse/security/advisories/GHSA-cfqr-cjx5-5jcm",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/andialbrecht/sqlparse/security/advisories/GHSA-cfqr-cjx5-5jcm"
        },
        {
          "name": "https://github.com/andialbrecht/sqlparse/commit/a51df6d9e2d31b44be9adb6bc8732517db6bf96b",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/andialbrecht/sqlparse/commit/a51df6d9e2d31b44be9adb6bc8732517db6bf96b"
        },
        {
          "name": "https://github.com/andialbrecht/sqlparse/releases/tag/0.6.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/andialbrecht/sqlparse/releases/tag/0.6.0"
        }
      ],
      "source": {
        "advisory": "GHSA-cfqr-cjx5-5jcm",
        "discovery": "UNKNOWN"
      },
      "title": "sqlparse: Reindentation of tuple lists causes near-cap quadratic CPU consumption"
    }
  },
  "cveMetadata": {
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-84305",
    "datePublished": "2026-09-01T18:33:10.969Z",
    "dateReserved": "2026-09-01T16:17:43.078Z",
    "dateUpdated": "2026-09-01T19:12:52.039Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Action not permitted

SUSE-SU-2026:3978-1

CVE-2026-84305 (GCVE-0-2026-84305)

Tags

Sightings

Nomenclature

Related by attack behaviour