Vulnerability-Lookup

GHSA-8F9R-F5GR-X4FC

Vulnerability from github – Published: 2026-08-13 00:31 – Updated: 2026-08-13 00:31

Details

In OpenStack Designate before 22.0.1, zone creation checks (_is_subzone, _is_superzone, and the duplicate-zone DB constraint) are scoped to the target pool only. An authenticated user can bypass these checks by scheduling a zone to a different pool via the AttributeFilter scheduler, creating an overlapping zone that conflicts with another tenant's zone. This enables cross-tenant DNS hijack (redirecting traffic to attacker-controlled IPs) and DNS denial of service (NODATA responses). Exploitation requires a multi-pool deployment with AttributeFilter enabled in scheduler_filters, which is a non-default but documented and supported configuration for self-service tiering.

Severity

9.6 (Critical)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-71193"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-12T23:17:22Z",
    "severity": "CRITICAL"
  },
  "details": "In OpenStack Designate before 22.0.1, zone creation checks (_is_subzone, _is_superzone, and the duplicate-zone DB constraint) are scoped to the target pool only. An authenticated user can bypass these checks by scheduling a zone to a different pool via the AttributeFilter scheduler, creating an overlapping zone that conflicts with another tenant\u0027s zone. This enables cross-tenant DNS hijack (redirecting traffic to attacker-controlled IPs) and DNS denial of service (NODATA responses). Exploitation requires a multi-pool deployment with AttributeFilter enabled in scheduler_filters, which is a non-default but documented and supported configuration for self-service tiering.",
  "id": "GHSA-8f9r-f5gr-x4fc",
  "modified": "2026-08-13T00:31:28Z",
  "published": "2026-08-13T00:31:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-71193"
    },
    {
      "type": "WEB",
      "url": "https://launchpad.net/bugs/2160533"
    },
    {
      "type": "WEB",
      "url": "https://security.openstack.org/ossa/OSSA-2026-034.html"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2026/08/11/6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-71193 (GCVE-0-2026-71193)

Vulnerability from cvelistv5 – Published: 2026-08-12 22:17 – Updated: 2026-08-13 13:35

Summary

Severity

9.6 (Critical)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-13 13:33 UTC

CWE

CWE-863 - Incorrect Authorization

Assigner

mitre

References

3 references

URL	Tags
https://launchpad.net/bugs/2160533	issue-tracking
https://security.openstack.org/ossa/OSSA-2026-034.html	vendor-advisory
https://www.openwall.com/lists/oss-security/2026/…	vendor-advisorymailing-list

Impacted products

1 product

Vendor	Product	Version
OpenStack	Designate	Affected: 1.0.0 , < 20.0.2 (semver) Affected: 21.0.0 , < 21.0.1 (semver) Affected: 22.0.0 , < 22.0.1 (semver)

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    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-71193",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-13T13:33:33.269958Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
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              "lessThan": "20.0.2",
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            },
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              "status": "affected",
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            }
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        }
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            "attackComplexity": "LOW",
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            "confidentialityImpact": "NONE",
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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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

GHSA-8F9R-F5GR-X4FC

CVE-2026-71193 (GCVE-0-2026-71193)

Tags

Sightings

Nomenclature