Vulnerability-Lookup

GHSA-3492-CVG7-9MR2

Vulnerability from github – Published: 2026-09-16 15:32 – Updated: 2026-09-16 15:32

Summary

djust: Multi-tenant isolation fails open on the WebSocket/SSE path, disclosing other tenants' data

Details

Impact

djust.tenants isolation was enforced only on the HTTP path. The current tenant was stored in threading.local() and set exclusively by the HTTP-only TenantMiddleware, so on the live (WebSocket/SSE) path get_current_tenant() was always None during mount and every event handler — and the tenant-aware QuerySet manager failed OPEN (returned the unfiltered queryset, ignoring STRICT_MODE), disclosing every tenant's rows to whoever held the socket. threading.local was additionally shared across connections on the sync_to_async executor thread.

Patches

Fixed in djust 1.0.7. Tenant storage moved to a contextvars.ContextVar (per async task); the resolved tenant is bound around WS/SSE mount and every dispatch; both managers scope the base queryset once and fail CLOSED (.none() under the default STRICT_MODE); and system check S006 warns when STRICT_MODE=False.

Workarounds

No workaround on the live path short of upgrading.

Severity

7.7 (High)


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

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "djust"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-61595"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-636",
      "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-16T15:32:10Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Impact\n`djust.tenants` isolation was enforced only on the HTTP path. The current tenant was stored in `threading.local()` and set exclusively by the HTTP-only `TenantMiddleware`, so on the live (WebSocket/SSE) path `get_current_tenant()` was always `None` during mount and every event handler \u2014 and the tenant-aware `QuerySet` manager failed **OPEN** (returned the unfiltered queryset, ignoring `STRICT_MODE`), disclosing **every** tenant\u0027s rows to whoever held the socket. `threading.local` was additionally shared across connections on the `sync_to_async` executor thread.\n\n### Patches\nFixed in **djust 1.0.7**. Tenant storage moved to a `contextvars.ContextVar` (per async task); the resolved tenant is bound around WS/SSE mount and every dispatch; both managers scope the base queryset once and fail **CLOSED** (`.none()` under the default `STRICT_MODE`); and system check **S006** warns when `STRICT_MODE=False`.\n\n### Workarounds\nNo workaround on the live path short of upgrading.",
  "id": "GHSA-3492-cvg7-9mr2",
  "modified": "2026-09-16T15:32:10Z",
  "published": "2026-09-16T15:32:10Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/djust-org/djust/security/advisories/GHSA-3492-cvg7-9mr2"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/djust-org/djust"
    },
    {
      "type": "WEB",
      "url": "https://github.com/djust-org/djust/releases/tag/v1.0.7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "djust: Multi-tenant isolation fails open on the WebSocket/SSE path, disclosing other tenants\u0027 data"
}

CVE-2026-61595 (GCVE-0-2026-61595)

Vulnerability from cvelistv5 – Published: 2026-09-16 15:33 – Updated: 2026-09-16 18:35

Title

djust: Multi-tenant isolation fails open on the WebSocket/SSE path, disclosing other tenants' data

Summary

djust provides Phoenix LiveView-style reactive server-side rendering for Django with Rust-powered performance. Prior to version 1.0.7, `djust.tenants` isolation was enforced only on the HTTP path. The current tenant was stored in `threading.local()` and set exclusively by the HTTP-only `TenantMiddleware`, so on the live (WebSocket/SSE) path `get_current_tenant()` was always `None` during mount and every event handler — and the tenant-aware `QuerySet` manager failed OPEN (returned the unfiltered queryset, ignoring `STRICT_MODE`), disclosing every tenant's rows to whoever held the socket. `threading.local` was additionally shared across connections on the `sync_to_async` executor thread. This issue is fixed in djust 1.0.7. Tenant storage moved to a `contextvars.ContextVar` (per async task); the resolved tenant is bound around WS/SSE mount and every dispatch; both managers scope the base queryset once and fail CLOSED (`.none()` under the default `STRICT_MODE`); and system check S006 warns when `STRICT_MODE=False`. No known workarounds are available on the live path.

Severity

7.7 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-16 18:18 UTC

CWE

CWE-636 - Not Failing Securely ('Failing Open')
CWE-862 - Missing Authorization

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/djust-org/djust/security/advis…	x_refsource_CONFIRM
https://github.com/djust-org/djust/releases/tag/v1.0.7	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
djust-org	djust	Affected: < 1.0.7

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-61595",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-16T18:18:43.770267Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-16T18:35:16.208Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "djust",
          "vendor": "djust-org",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.0.7"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "djust provides Phoenix LiveView-style reactive server-side rendering for Django with Rust-powered performance. Prior to version 1.0.7, `djust.tenants` isolation was enforced only on the HTTP path. The current tenant was stored in `threading.local()` and set exclusively by the HTTP-only `TenantMiddleware`, so on the live (WebSocket/SSE) path `get_current_tenant()` was always `None` during mount and every event handler \u2014 and the tenant-aware `QuerySet` manager failed OPEN (returned the unfiltered queryset, ignoring `STRICT_MODE`), disclosing every tenant\u0027s rows to whoever held the socket. `threading.local` was additionally shared across connections on the `sync_to_async` executor thread. This issue is fixed in djust 1.0.7. Tenant storage moved to a `contextvars.ContextVar` (per async task); the resolved tenant is bound around WS/SSE mount and every dispatch; both managers scope the base queryset once and fail CLOSED (`.none()` under the default `STRICT_MODE`); and system check S006 warns when `STRICT_MODE=False`. No known workarounds are available on the live path."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-636",
              "description": "CWE-636: Not Failing Securely (\u0027Failing Open\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862: Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-16T15:33:40.579Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/djust-org/djust/security/advisories/GHSA-3492-cvg7-9mr2",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/djust-org/djust/security/advisories/GHSA-3492-cvg7-9mr2"
        },
        {
          "name": "https://github.com/djust-org/djust/releases/tag/v1.0.7",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/djust-org/djust/releases/tag/v1.0.7"
        }
      ],
      "source": {
        "advisory": "GHSA-3492-cvg7-9mr2",
        "discovery": "UNKNOWN"
      },
      "title": "djust: Multi-tenant isolation fails open on the WebSocket/SSE path, disclosing other tenants\u0027 data"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-61595",
    "datePublished": "2026-09-16T15:33:40.579Z",
    "dateReserved": "2026-07-10T17:12:17.238Z",
    "dateUpdated": "2026-09-16T18:35:16.208Z",
    "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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