PYSEC-2026-4039

Vulnerability from pysec - Published: 2026-10-01 16:38 - Updated: 2026-10-01 17:10
VLAI
Details

Impact

djust's observability endpoints expose live view/session state and a remote method-invocation surface (eval_handler). The localhost restriction was an opt-in middleware that the documented setup omits; the views themselves enforced only DEBUG. In the misconfigured-but-documented scenario (DEBUG on, middleware not installed) a non-localhost client could read live application state and invoke handlers remotely.

Patches

Fixed in djust 1.0.7. The localhost restriction is enforced in-view on every observability endpoint (no longer dependent on a separately-installed middleware), and eval_handler is restricted; gated requests receive a non-disclosing response.

Workarounds

Ensure DEBUG=False in production, and do not expose the observability endpoints to untrusted networks.

Severity
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Impacted products
Name purl
djust pkg:pypi/djust
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "djust",
        "purl": "pkg:pypi/djust"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.1.0",
        "0.1.2",
        "0.1.3",
        "0.1.4",
        "0.1.5",
        "0.1.6",
        "0.1.7",
        "0.1.8",
        "0.1.9",
        "0.2.0",
        "0.2.1",
        "0.2.2",
        "0.3.0",
        "0.3.1",
        "0.3.2",
        "0.3.4",
        "0.3.5",
        "0.3.6",
        "0.3.7",
        "0.3.8",
        "0.4.0",
        "0.4.1",
        "0.4.2",
        "0.4.3",
        "0.4.4",
        "0.9.0",
        "0.9.1",
        "0.9.2",
        "0.9.4",
        "0.9.5",
        "0.9.6",
        "0.9.7",
        "1.0.0",
        "1.0.0rc11",
        "1.0.1",
        "1.0.2",
        "1.0.3",
        "1.0.4",
        "1.0.5",
        "1.0.6"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-61590",
    "GHSA-8g2f-g3gq-5rjv"
  ],
  "details": "### Impact\ndjust\u0027s observability endpoints expose live view/session state and a remote method-invocation surface (`eval_handler`). The localhost restriction was an **opt-in middleware that the documented setup omits**; the views themselves enforced only `DEBUG`. In the misconfigured-but-documented scenario (DEBUG on, middleware not installed) a non-localhost client could read live application state and invoke handlers remotely.\n\n### Patches\nFixed in **djust 1.0.7**. The localhost restriction is enforced **in-view** on every observability endpoint (no longer dependent on a separately-installed middleware), and `eval_handler` is restricted; gated requests receive a non-disclosing response.\n\n### Workarounds\nEnsure `DEBUG=False` in production, and do not expose the observability endpoints to untrusted networks.",
  "id": "PYSEC-2026-4039",
  "modified": "2026-10-01T17:10:21.387461Z",
  "published": "2026-10-01T16:38:30.820008Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/djust-org/djust/security/advisories/GHSA-8g2f-g3gq-5rjv"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/djust-org/djust"
    },
    {
      "type": "WEB",
      "url": "https://github.com/djust-org/djust/releases/tag/v1.0.7"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/djust"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-8g2f-g3gq-5rjv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-61590"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "djust\u0027s observability endpoints are network-exposed: the localhost gate is an opt-in middleware the docs omit, and the views enforce only DEBUG"
}



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