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FKIE_CVE-2026-55571

Vulnerability from fkie_nvd - Published: 2026-08-25 17:17 - Updated: 2026-09-09 21:07
Severity
8.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Summary
djust provides Phoenix LiveView-style reactive server-side rendering for Django with Rust-powered performance. Prior to 1.0.4, LiveViewConsumer.handle_mount sends a `{"type":"navigate","to":...}` frame when login_required, permission_required, or a redirecting on_mount hook denies a LiveView mount, but returns without closing the WebSocket or clearing self.view_instance. A browser follows the redirect, but a raw WebSocket client can ignore it and retain the mounted socket. Because LiveViewConsumer.handle_event does not recheck authentication or authorization, the client can send `{"type":"event",...}` frames that invoke @event_handler methods without an authenticated session, including through handle_live_redirect_mount, enabling unauthorized sensitive reads or mutations. This issue is fixed in version 1.0.4.
References
security-advisories@github.comhttps://github.com/djust-org/djust/commit/1ae8aa9246b80477de7ddc4d90319a3b267bef04
security-advisories@github.comhttps://github.com/djust-org/djust/pull/1780
security-advisories@github.comhttps://github.com/djust-org/djust/releases/tag/v1.0.4
security-advisories@github.comhttps://github.com/djust-org/djust/security/advisories/GHSA-xx4j-w367-7247
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/djust-org/djust/security/advisories/GHSA-xx4j-w367-7247
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "djust",
          "vendor": "djust-org",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.0.4"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "djust provides Phoenix LiveView-style reactive server-side rendering for Django with Rust-powered performance. Prior to 1.0.4, LiveViewConsumer.handle_mount sends a `{\"type\":\"navigate\",\"to\":...}` frame when login_required, permission_required, or a redirecting on_mount hook denies a LiveView mount, but returns without closing the WebSocket or clearing self.view_instance. A browser follows the redirect, but a raw WebSocket client can ignore it and retain the mounted socket. Because LiveViewConsumer.handle_event does not recheck authentication or authorization, the client can send `{\"type\":\"event\",...}` frames that invoke @event_handler methods without an authenticated session, including through handle_live_redirect_mount, enabling unauthorized sensitive reads or mutations. This issue is fixed in version 1.0.4."
    }
  ],
  "id": "CVE-2026-55571",
  "lastModified": "2026-09-09T21:07:31.353",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-55571",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-25T17:53:50.399545Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-25T17:17:32.547",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/djust-org/djust/commit/1ae8aa9246b80477de7ddc4d90319a3b267bef04"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/djust-org/djust/pull/1780"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/djust-org/djust/releases/tag/v1.0.4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/djust-org/djust/security/advisories/GHSA-xx4j-w367-7247"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/djust-org/djust/security/advisories/GHSA-xx4j-w367-7247"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-285"
        },
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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